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Vouillon A, Barthelemy J, Lebeau L, Nisole S, Savini G, Lévêque N, Simonin Y, Garcia M, Bodet C. Skin tropism during Usutu virus and West Nile virus infection: an amplifying and immunological role. J Virol 2024; 98:e0183023. [PMID: 38088560 PMCID: PMC10805065 DOI: 10.1128/jvi.01830-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 01/24/2024] Open
Abstract
Usutu virus (USUV) and West Nile virus (WNV) are closely related emerging arboviruses belonging to the Flavivirus genus and posing global public health concerns. Although human infection by these viruses is mainly asymptomatic, both have been associated with neurological disorders such as encephalitis and meningoencephalitis. Since USUV and WNV are transmitted through the bite of an infected mosquito, the skin represents the initial site of virus inoculation and provides the first line of host defense. Although some data on the early stages of WNV skin infection are available, very little is known about USUV. Herein, USUV-skin resident cell interactions were characterized. Using primary human keratinocytes and fibroblasts, an early replication of USUV during the first 24 hours was shown in both skin cells. In human skin explants, a high viral tropism for keratinocytes was observed. USUV infection of these models induced type I and III interferon responses associated with upregulated expression of various interferon-stimulated genes as well as pro-inflammatory cytokine and chemokine genes. Among the four USUV lineages studied, the Europe 2 strain replicated more efficiently in skin cells and induced a higher innate immune response. In vivo, USUV and WNV disseminated quickly from the inoculation site to distal cutaneous tissues. In addition, viral replication and persistence in skin cells were associated with an antiviral response. Taken together, these results provide a better understanding of the pathophysiology of the early steps of USUV infection and suggest that the skin constitutes a major amplifying organ for USUV and WNV infection.IMPORTANCEUsutu virus (USUV) and West Nile virus (WNV) are closely related emerging Flaviviruses transmitted through the bite of an infected mosquito. Since they are directly inoculated within the upper skin layers, the interactions between the virus and skin cells are critical in the pathophysiology of USUV and WNV infection. Here, during the early steps of infection, we showed that USUV can efficiently infect two human resident skin cell types at the inoculation site: the epidermal keratinocytes and the dermal fibroblasts, leading to the induction of an antiviral innate immune response. Moreover, following cutaneous inoculation, we demonstrated that both viruses can rapidly spread, replicate, and persist in all distal cutaneous tissues in mice, a phenomenon associated with a generalized skin inflammatory response. These results highlight the key amplifying and immunological role of the skin during USUV and WNV infection.
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Affiliation(s)
- Axelle Vouillon
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France
| | - Jonathan Barthelemy
- Pathogenesis and Control of Chronic and Emerging Infections (PCCEI), University of Montpellier, INSERM, EFS, Montpellier, France
| | - Lucie Lebeau
- Service d'Anatomie et Cytologie Pathologiques, CHU de Poitiers, Poitiers, France
| | - Sébastien Nisole
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, Montpellier, France
| | - Giovanni Savini
- Department of Virology, Istituto Zooprofilattico Sperimentale dell'Abruzzo e del Molise (IZS-Teramo), Teramo, Italy
| | - Nicolas Lévêque
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France
| | - Yannick Simonin
- Pathogenesis and Control of Chronic and Emerging Infections (PCCEI), University of Montpellier, INSERM, EFS, Montpellier, France
| | - Magali Garcia
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France
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Desrini S, Ducloux J, Hamion G, Bodet C, Labanowski J, Mustofa M, Nuryastuti T, Imbert C, Girardot M. Antibiofilm Activity of Invasive Plants against Candida albicans: Focus on Baccharis halimifolia Essential Oil and Its Compounds. Chem Biodivers 2023; 20:e202300130. [PMID: 37452792 DOI: 10.1002/cbdv.202300130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 07/11/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
The extracts of five invasive plants were investigated for antifungal and antibiofilm activities against Candida albicans, C. glabrata, C. krusei, and C. parapsilosis. The antifungal activity was evaluated using the microdilution assay and the antibiofilm effect by measurement of the metabolic activity. Ethanol and ethanol-water extracts of Reynoutria japonica leaves inhibited 50 % of planktonic cells at 250 μg mL-1 and 15.6 μg mL-1 , respectively. Ethanol and ethanol-water extracts of Baccharis halimifolia inhibited >75 % of the mature biofilm of C. albicans at 500 μg mL-1 . The essential oil (EO) of B. halimifolia leaves was the most active (50 % inhibition (IC50 ) at 4 and 74 μg mL-1 against the maturation phase and 24 h old-biofilms of C. albicans, respectively). Oxygenated sesquiterpenes were the primary contents in this EO (62.02 %), with β-caryophyllene oxide as the major component (37 %). Aromadendrene oxide-(2), β-caryophyllene oxide, and (±)-β-pinene displayed significant activities against the maturation phase (IC50 =9-310 μ mol l-1 ) and preformed 24 h-biofilm (IC50 =38-630 μ mol l-1 ) of C. albicans with very low cytotoxicity for the first two compounds. C. albicans remained the most susceptible species to this EO and its components. This study highlighted for the first time the antibiofilm potential of B. halimifolia, its EO and some of its components.
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Affiliation(s)
- Sufi Desrini
- Department of Pharmacology, Faculty of Medicine, Universitas Islam Indonesia, 55584, Yogyakarta, Indonesia
- Doctoral Programme of Faculty Medicine, Public Health and Nursing, Universitas Gadjah Mada, Indonesia
- Laboratoire Ecologie et Biologie des Interactions -, UMR CNRS 7267, Université de Poitiers, Poitiers, France
| | - Julien Ducloux
- Laboratoire Ecologie et Biologie des Interactions -, UMR CNRS 7267, Université de Poitiers, Poitiers, France
| | - Guillaume Hamion
- Laboratoire Ecologie et Biologie des Interactions -, UMR CNRS 7267, Université de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines UR 15560, Université de Poitiers, Poitiers, France
| | | | - Mustofa Mustofa
- Department of Pharmacology and Therapy, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Indonesia
- Indonesia Biofilm Research Collaboration Center UGM-BRIN, Yogyakarta, Indonesia
| | - Titik Nuryastuti
- Department of Microbiology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Indonesia
- Indonesia Biofilm Research Collaboration Center UGM-BRIN, Yogyakarta, Indonesia
| | - Christine Imbert
- Laboratoire Ecologie et Biologie des Interactions -, UMR CNRS 7267, Université de Poitiers, Poitiers, France
| | - Marion Girardot
- Laboratoire Ecologie et Biologie des Interactions -, UMR CNRS 7267, Université de Poitiers, Poitiers, France
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Jousselin C, Pliego-Cortés H, Damour A, Garcia M, Bodet C, Robledo D, Bourgougnon N, Lévêque N. Anti-SARS-CoV-2 Activity of Polysaccharides Extracted from Halymenia floresii and Solieria chordalis (Rhodophyta). Mar Drugs 2023; 21:348. [PMID: 37367673 DOI: 10.3390/md21060348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023] Open
Abstract
Even after hundreds of clinical trials, the search for new antivirals to treat COVID-19 is still relevant. Carrageenans are seaweed sulfated polysaccharides displaying antiviral activity against a wide range of respiratory viruses. The objective of this work was to study the antiviral properties of Halymenia floresii and Solieria chordalis carrageenans against SARS-CoV-2. Six polysaccharide fractions obtained from H. floresii and S. chordalis by Enzyme-Assisted Extraction (EAE) or Hot Water Extraction (HWE) were tested. The effect of carrageenan on viral replication was assessed during infection of human airway epithelial cells with a clinical strain of SARS-CoV-2. The addition of carrageenans at different times of the infection helped to determine their mechanism of antiviral action. The four polysaccharide fractions isolated from H. floresii displayed antiviral properties while the S. chordalis fractions did not. EAE-purified fractions caused a stronger reduction in viral RNA concentration. Their antiviral action is likely related to an inhibition of the virus attachment to the cell surface. This study confirms that carrageenans could be used as first-line treatment in the respiratory mucosa to inhibit the infection and transmission of SARS-CoV-2. Low production costs, low cytotoxicity, and a broad spectrum of antiviral properties constitute the main strengths of these natural molecules.
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Affiliation(s)
- Clément Jousselin
- Laboratoire de Virologie et Mycobactériologie, Centre Hospitalier Universitaire, 86021 Poitiers, France
- Laboratoire Inflammation Tissus Epitheliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France
| | - Hugo Pliego-Cortés
- Université Bretagne-Sud, EMR CNRS 6076, LBCM, IUEM, F-56000 Vannes, France
| | - Alexia Damour
- Laboratoire Inflammation Tissus Epitheliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France
| | - Magali Garcia
- Laboratoire de Virologie et Mycobactériologie, Centre Hospitalier Universitaire, 86021 Poitiers, France
- Laboratoire Inflammation Tissus Epitheliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation Tissus Epitheliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France
| | - Daniel Robledo
- Centro de Investigación y de Estudios Avanzados (CINVESTAV), Unidad Mérida, AP 73, Cordemex, Mérida 97310, Yucatán, Mexico
| | | | - Nicolas Lévêque
- Laboratoire de Virologie et Mycobactériologie, Centre Hospitalier Universitaire, 86021 Poitiers, France
- Laboratoire Inflammation Tissus Epitheliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France
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Bodet C, Jaumotte M, Le Clercq M, Pepinster F, Gilon Y. [Subcutaneous emphysema after dental or stomatological treatment, rare complications or consequences of malpractice ?]. Rev Med Liege 2022; 77:635-636. [PMID: 36354223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The occurrence of pneumomediastinum and subcutaneous emphysema following oral treatment is the result of the inappropriate use of dental equipment using pressurised air. However, their use in oral surgery, including dental extractions, continues nowadays. In addition to being a source of subcutaneous and pneumomediastinum emphysema at risk of infection, pneumatic instrumentation can also be a source of potentially serious gas embolisms. A thorough knowledge of this type of complication by the practitioners and the proper use of the instrumentation will enable a significant reduction of the incidence of theses complications.
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Affiliation(s)
- C Bodet
- Étudiante Master 3 Médecine, ULiège, Belgique
| | - M Jaumotte
- Service de Chirurgie plastique et maxillo-faciale CHU Liège, Belgique
| | - M Le Clercq
- Service de Chirurgie plastique et maxillo-faciale CHU Liège, Belgique
| | - F Pepinster
- Service de Chirurgie plastique et maxillo-faciale CHU Liège, Belgique
| | - Y Gilon
- Service de Chirurgie plastique et maxillo-faciale CHU Liège, Belgique
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Lecron JC, Charreau S, Jégou JF, Salhi N, Petit-Paris I, Guignouard E, Burucoa C, Favot-Laforge L, Bodet C, Barra A, Huguier V, Mcheik J, Dumoutier L, Garnier J, Bernard FX, Ryffel B, Morel F. IL-17 and IL-22 are pivotal cytokines to delay wound healing of S. aureus and P. aeruginosa infected skin. Front Immunol 2022; 13:984016. [PMID: 36275755 PMCID: PMC9585169 DOI: 10.3389/fimmu.2022.984016] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
IntroductionAlthough the presence of pathogens in skin wounds is known to delay the wound healing process, the mechanisms underlying this delay remain poorly understood. In the present study, we have investigated the regulatory role of proinflammatory cytokines on the healing kinetics of infected wounds.MethodsWe have developed a mouse model of cutaneous wound healing, with or without wound inoculation with Staphylococcus aureus and Pseudomonas aeruginosa, two major pathogens involved in cutaneous wound bacterial infections.ResultsAseptic excision in C57BL/6 mouse skin induced early expression of IL-1β, TNFα and Oncostatin M (OSM), without detectable expression of IL-22 and IL-17A/F. S. aureus and P. aeruginosa wound inoculation not only increased the expression of IL-1β and OSM, but also induced a strong cutaneous expression of IL-22, IL-17A and IL-17F, along with an increased number of infiltrating IL-17A and/or IL-22-producing γδ T cells. The same cytokine expression pattern was observed in infected human skin wounds. When compared to uninfected wounds, mouse skin infection delayed the wound healing process. Injection of IL-1α, TNFα, OSM, IL-22 and IL-17 together in the wound edges induced delayed wound healing similar to that induced by the bacterial infection. Wound healing experiments in infected Rag2KO mice (deficient in lymphocytes) showed a wound healing kinetic similar to uninfected Rag2KO mice or WT mice. Rag2KO infected-skin lesions expressed lower levels of IL-17 and IL-22 than WT, suggesting that the expression of these cytokines is mainly dependent on γδ T cells in this model. Wound healing was not delayed in infected IL-17R/IL-22KO, comparable to uninfected control mice. Injection of recombinant IL-22 and IL-17 in infected wound edges of Rag2KO mice re-establish the delayed kinetic of wound healing, as in infected WT mice.ConclusionThese results demonstrate the synergistic and specific effects of IL-22 and IL-17 induced by bacterial infection delay the wound healing process, regardless of the presence of bacteria per se. Therefore, these cytokines play an unexpected role in delayed skin wound healing.
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Affiliation(s)
- Jean-Claude Lecron
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Laboratoire Immunologie et Inflammation, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
- *Correspondence: Jean-Claude Lecron,
| | - Sandrine Charreau
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Qima-Bioalternatives (Qima Life Sciences), Gençay, France
| | - Jean-François Jégou
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Nadjet Salhi
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Isabelle Petit-Paris
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Emmanuel Guignouard
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Christophe Burucoa
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Laboratoire de Bactériologie, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
| | - Laure Favot-Laforge
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
| | - Anne Barra
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Laboratoire Immunologie et Inflammation, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
| | - Vincent Huguier
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Service de Chirurgie Plastique, Centre Hospitalier et Universitaire (CHU) de Poitiers, Poitiers, France
| | - Jiad Mcheik
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Service de Chirurgie Pédiatrique, Centre Hospitalier et Universitaire CHU) de Poitiers, Poitiers, France
| | - Laure Dumoutier
- De Duve Institute, Université catholique de Louvain, Brussels, Belgium
| | - Julien Garnier
- Qima-Bioalternatives (Qima Life Sciences), Gençay, France
| | - François-Xavier Bernard
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
- Qima-Bioalternatives (Qima Life Sciences), Gençay, France
| | - Bernhard Ryffel
- Laboratoire d'Immunologie et Neurogénétique Expérimentales et Moléculaire (INEM) - Unité Mixte de Recherche (UMR) 7355, Centre National de la Recherche Scientifique (CNRS) et Université d’Orléans, Orléans, France
| | - Franck Morel
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UR15560, Université de Poitiers, Poitiers, France
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Humeau M, Boniface K, Bodet C. Cytokine-Mediated Crosstalk Between Keratinocytes and T Cells in Atopic Dermatitis. Front Immunol 2022; 13:801579. [PMID: 35464457 PMCID: PMC9022745 DOI: 10.3389/fimmu.2022.801579] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 03/07/2022] [Indexed: 01/22/2023] Open
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disease characterized by barrier dysfunction, dysregulated immune response, and dysbiosis with increased Staphylococcus aureus colonization. Infiltration of various T helper cell subsets into lesional skin and subsequent cytokine release are a hallmark of AD. Release of cytokines by both T cells and keratinocytes plays a key role in skin inflammation and drives many AD features. This review aims to discuss cytokine-mediated crosstalk between T cells and keratinocytes in AD pathogenesis and the potential impact of virulence factors produced by Staphylococcus aureus on these interactions.
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Affiliation(s)
- Mélanie Humeau
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines LITEC UR 15560, Université de Poitiers, Poitiers, France
| | - Katia Boniface
- ImmunoConcEpT, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5164, University of Bordeaux, Bordeaux, France
| | - Charles Bodet
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines LITEC UR 15560, Université de Poitiers, Poitiers, France
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Martin MF, Maarifi G, Abiven H, Seffals M, Mouchet N, Beck C, Bodet C, Lévèque N, Arhel NJ, Blanchet FP, Simonin Y, Nisole S. Usutu virus escapes langerin-induced restriction to productively infect human Langerhans cells, unlike West Nile virus. Emerg Microbes Infect 2022; 11:761-774. [PMID: 35191820 PMCID: PMC8903762 DOI: 10.1080/22221751.2022.2045875] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Usutu virus (USUV) and West Nile virus (WNV) are phylogenetically close emerging arboviruses and constitute a global public health threat. Since USUV and WNV are transmitted by mosquitoes, the first immune cells they encounter are skin-resident dendritic cells, the most peripheral outpost of immune defense. This unique network is composed of Langerhans cells (LCs) and dermal DCs, which reside in the epidermis and the dermis, respectively. Using human skin explants, we show that while both viruses can replicate in keratinocytes, they can also infect resident DCs with distinct tropism: WNV preferentially infects DCs in the dermis, whereas USUV has a greater propensity to infect LCs. Using both purified human epidermal LCs (eLCs) and monocyte derived LCs (MoLCs), we confirm that LCs sustain a faster and more efficient replication of USUV than WNV and that this correlates with a more intense innate immune response to USUV compared with WNV. Next, we show that ectopic expression of the LC-specific C-type lectin receptor (CLR), langerin, in HEK293T cells allows WNV and USUV to bind and enter, but supports the subsequent replication of USUV only. Conversely, blocking or silencing langerin in MoLCs or eLCs made them resistant to USUV infection, thus demonstrating that USUV uses langerin to enter and replicate in LCs. Altogether, our results demonstrate that LCs constitute privileged target cells for USUV in human skin, because langerin favours its entry and replication. Intriguingly, this suggests that USUV efficiently escapes the antiviral functions of langerin, which normally safeguards LCs from most viral infections.
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Affiliation(s)
- Marie-France Martin
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, Montpellier, France
| | - Ghizlane Maarifi
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, Montpellier, France
| | - Hervé Abiven
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, Montpellier, France
| | - Marine Seffals
- Plateforme H2P2, Université de Rennes 1, Biosit, Rennes, France
| | - Nicolas Mouchet
- Plateforme H2P2, Université de Rennes 1, Biosit, Rennes, France
| | - Cécile Beck
- UMR1161 Virologie, INRAE, ANSES, Ecole Nationale Vétérinaire d'Alfort, Université Paris-Est, Maisons-Alfort, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Nicolas Lévèque
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Nathalie J Arhel
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, Montpellier, France
| | - Fabien P Blanchet
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, Montpellier, France
| | - Yannick Simonin
- Pathogenesis and Control of Chronic and Emerging Infections, Université de Montpellier, INSERM, EFS, Montpellier, France
| | - Sébastien Nisole
- Institut de Recherche en Infectiologie de Montpellier (IRIM), Université de Montpellier, CNRS, Montpellier, France
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8
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Damour A, Robin B, Deroche L, Broutin L, Bellin N, Verdon J, Lina G, Leclère FM, Garcia M, Cremniter J, Lévêque N, Bodet C. Phenol-soluble modulins α are major virulence factors of Staphylococcus aureus secretome promoting inflammatory response in human epidermis. Virulence 2021; 12:2474-2492. [PMID: 34516337 PMCID: PMC8451463 DOI: 10.1080/21505594.2021.1975909] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Staphylococcus aureus is a skin commensal microorganism commonly colonizing healthy humans. Nevertheless, S. aureus can also be responsible for cutaneous infections and contribute to flare-up of inflammatory skin diseases such as atopic dermatitis (AD), which is characterized by dysbiosis of the skin microbiota with S. aureus as the predominant species. However, the role of major virulence factors of this pathogen such as phenol-soluble modulin (PSM) toxins in epidermal inflammation remains poorly understood. Stimulation of primary human keratinocytes with sublytic concentrations of synthetic and purified PSM α3 resulted in upregulation of a large panel of pro-inflammatory chemokine and cytokine gene expression, including CXCL1, CXCL2, CXCL3, CXCL5, CXCL8, CCL20, IL-1α, IL-1β, IL-6, IL-36γ and TNF-α, while inducing the release of CXCL8, CCL20, TNF-α and IL-6. In addition, using S. aureus culture supernatant from mutants deleted from genes encoding either α-type PSMs or all PSM production, PSMs were shown to be the main factors of S. aureus secretome responsible for pro-inflammatory mediator induction in human keratinocytes. On the other hand, α-type PSM-containing supernatant triggered an intense induction of pro-inflammatory mediator expression and secretion during both topical and basal layer stimulation of an ex vivo model of human skin explants, a physiologically relevant model of pluristratified epidermis. Taken together, the results of this study show that PSMs and more specifically α-type PSMs are major virulence factors of S. aureus inducing a potent inflammatory response during infection of the human epidermis and could thereby contribute to AD flare-up through exacerbation of skin inflammation.
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Affiliation(s)
- Alexia Damour
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France
| | - Brandon Robin
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France
| | - Luc Deroche
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France
| | - Lauranne Broutin
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France.,Laboratoire De Bactériologie, CHU de Poitiers, Poitiers, France
| | - Nicolas Bellin
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France
| | - Julien Verdon
- Laboratoire Ecologie et Biologie des Interactions, UMR CNRS 7267, Université De Poitiers, Poitiers, France
| | - Gérard Lina
- CIRI Centre International de Recherche en Infectiologie, Inserm U1111, Université Lyon 1, Ecole Normale Supérieure de Lyon, Lyon, France.,Centre National de Référence des Staphylocoques, Institut des Agent Infectieux, Hôpital de La Croix Rousse, Hospices Civils de Lyon, Lyon, France
| | - Franck Marie Leclère
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France.,Département de Chirurgie Plastique, Reconstructive et Esthétique, CHU de Poitiers, Poitiers, France
| | - Magali Garcia
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France.,Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France
| | - Julie Cremniter
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France.,Laboratoire De Bactériologie, CHU de Poitiers, Poitiers, France
| | - Nicolas Lévêque
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France.,Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université De Poitiers, Poitiers, France
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9
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Damour A, Garcia M, Cho HS, Larivière A, Lévêque N, Park C, Bodet C. Characterisation of Antiviral Activity of Cathelicidins from Naked Mole Rat and Python bivittatus on Human Herpes Simplex Virus 1. Pharmaceuticals (Basel) 2021; 14:ph14080715. [PMID: 34451812 PMCID: PMC8398704 DOI: 10.3390/ph14080715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 12/15/2022] Open
Abstract
Hg-CATH and Pb-CATH4 are cathelicidins from Heterocephalus glaber and Python bivittatus that have been previously identified as potent antibacterial peptides. However, their antiviral properties were not previously investigated. In this study, their activity against the herpes simplex virus (HSV)-1 was evaluated during primary human keratinocyte infection. Both of them significantly reduced HSV-1 DNA replication and production of infectious viral particles in keratinocytes at noncytotoxic concentrations, with the stronger activity of Pb-CATH4. These peptides did not show direct virucidal activity and did not exhibit significant immunomodulatory properties, except for Pb-CATH4, which exerted a moderate proinflammatory action. All in all, our results suggest that Hg-CATH and Pb-CATH4 could be potent candidates for the development of new therapies against HSV-1.
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Affiliation(s)
- Alexia Damour
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC EA 4331), Université de Poitiers, CEDEX 9, 86073 Poitiers, France; (A.D.); (M.G.); (A.L.); (N.L.)
| | - Magali Garcia
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC EA 4331), Université de Poitiers, CEDEX 9, 86073 Poitiers, France; (A.D.); (M.G.); (A.L.); (N.L.)
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86021 Poitiers, France
| | - Hye-Sun Cho
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 143-701, Korea; (H.-S.C.); (C.P.)
| | - Andy Larivière
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC EA 4331), Université de Poitiers, CEDEX 9, 86073 Poitiers, France; (A.D.); (M.G.); (A.L.); (N.L.)
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86021 Poitiers, France
| | - Nicolas Lévêque
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC EA 4331), Université de Poitiers, CEDEX 9, 86073 Poitiers, France; (A.D.); (M.G.); (A.L.); (N.L.)
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86021 Poitiers, France
| | - Chankyu Park
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul 143-701, Korea; (H.-S.C.); (C.P.)
| | - Charles Bodet
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines (LITEC EA 4331), Université de Poitiers, CEDEX 9, 86073 Poitiers, France; (A.D.); (M.G.); (A.L.); (N.L.)
- Correspondence:
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10
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Maarifi G, Lagisquet J, Hertel Q, Bonaventure B, Chamontin C, Fuchs K, Moncorgé O, Tauziet M, Mombled M, Papin L, Molès JP, Bodet C, Lévèque N, Gross A, Arhel N, Nisole S, Van de Perre P, Goujon C, Blanchet FP. Alarmin S100A9 restricts retroviral infection by limiting reverse transcription in human dendritic cells. EMBO J 2021; 40:e106540. [PMID: 34121210 DOI: 10.15252/embj.2020106540] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 05/07/2021] [Accepted: 05/14/2021] [Indexed: 11/09/2022] Open
Abstract
Dendritic cells (DC) subsets, like Langerhans cells (LC), are immune cells involved in pathogen sensing. They express specific antimicrobial cellular factors that are able to restrict infection and limit further pathogen transmission. Here, we identify the alarmin S100A9 as a novel intracellular antiretroviral factor expressed in human monocyte-derived and skin-derived LC. The intracellular expression of S100A9 is decreased upon LC maturation and inversely correlates with enhanced susceptibility to HIV-1 infection of LC. Furthermore, silencing of S100A9 in primary human LC relieves HIV-1 restriction while ectopic expression of S100A9 in various cell lines promotes intrinsic resistance to both HIV-1 and MLV infection by acting on reverse transcription. Mechanistically, the intracellular expression of S100A9 alters viral capsid uncoating and reverse transcription. S100A9 also shows potent inhibitory effect against HIV-1 and MMLV reverse transcriptase (RTase) activity in vitro in a divalent cation-dependent manner. Our findings uncover an unexpected intracellular function of the human alarmin S100A9 in regulating antiretroviral immunity in Langerhans cells.
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Affiliation(s)
- Ghizlane Maarifi
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Justine Lagisquet
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Quentin Hertel
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Boris Bonaventure
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Célia Chamontin
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Kyra Fuchs
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Olivier Moncorgé
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Marine Tauziet
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Margaux Mombled
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Laure Papin
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Jean-Pierre Molès
- Pathogenesis and Control of Chronic Infections, INSERM, University of Montpellier, Etablissement Français du Sang, CHU Montpellier, Montpellier, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Nicolas Lévèque
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Antoine Gross
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Nathalie Arhel
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Sébastien Nisole
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Philippe Van de Perre
- Pathogenesis and Control of Chronic Infections, INSERM, University of Montpellier, Etablissement Français du Sang, CHU Montpellier, Montpellier, France
| | - Caroline Goujon
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
| | - Fabien P Blanchet
- Institut de Recherche en Infectiologie de Montpellier, University of Montpellier, CNRS, Montpellier, France
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11
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Wils L, Leman-Loubière C, Bellin N, Clément-Larosière B, Pinault M, Chevalier S, Enguehard-Gueiffier C, Bodet C, Boudesocque-Delaye L. Natural deep eutectic solvent formulations for spirulina: Preparation, intensification, and skin impact. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102317] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Malgras M, Garcia M, Jousselin C, Bodet C, Lévêque N. The Antiviral Activities of Poly-ADP-Ribose Polymerases. Viruses 2021; 13:v13040582. [PMID: 33808354 PMCID: PMC8066025 DOI: 10.3390/v13040582] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 02/06/2023] Open
Abstract
The poly-adenosine diphosphate (ADP)-ribose polymerases (PARPs) are responsible for ADP-ribosylation, a reversible post-translational modification involved in many cellular processes including DNA damage repair, chromatin remodeling, regulation of translation and cell death. In addition to these physiological functions, recent studies have highlighted the role of PARPs in host defenses against viruses, either by direct antiviral activity, targeting certain steps of virus replication cycle, or indirect antiviral activity, via modulation of the innate immune response. This review focuses on the antiviral activity of PARPs, as well as strategies developed by viruses to escape their action.
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Affiliation(s)
- Mathilde Malgras
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France; (M.M.); (M.G.); (C.J.); (C.B.)
| | - Magali Garcia
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France; (M.M.); (M.G.); (C.J.); (C.B.)
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86021 Poitiers, France
| | - Clément Jousselin
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France; (M.M.); (M.G.); (C.J.); (C.B.)
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86021 Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France; (M.M.); (M.G.); (C.J.); (C.B.)
| | - Nicolas Lévêque
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines, Université de Poitiers, 86073 Poitiers, France; (M.M.); (M.G.); (C.J.); (C.B.)
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86021 Poitiers, France
- Correspondence: nicolas.lévê; Tel.: +33-(0)5-49-44-38-17
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13
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Abstract
Atopic dermatitis (AD) is the most common chronic inflammatory skin disease in the world. AD is a complex pathology mainly characterized by an impaired skin barrier, immune response dysfunction, and unbalanced skin microbiota. Moreover, AD patients exhibit an increased risk of developing bacterial and viral infections. One of the most current, and potentially life-threatening, viral infection is caused by herpes simplex virus (HSV), which occurs in about 3% of AD patients under the name of eczema herpeticum (EH). Following a first part dedicated to the clinical features, virological diagnosis, and current treatments of EH, this review will focus on the description of the pathophysiology and, more particularly, the presently known predisposing factors to herpetic complications in AD patients. These factors include those related to impairment of the skin barrier such as deficit in filaggrin and anomalies in tight and adherens junctions. In addition, low production of the antimicrobial peptides cathelicidin LL-37 and human β-defensins; overexpression of cytokines such as interleukin (IL)-4, IL-13, IL-25, IL-33, and thymic stromal lymphopoietin (TSLP); or downregulation of type I to III interferons as well as defect in functions of immune cells such as dendritic, natural killer, and regulatory T cells have been involved. Otherwise, genetic polymorphisms and AD topical calcineurin inhibitor treatments have been associated with an increased risk of EH. Finally, dysbiosis of skin microbiota characterized in AD patients by Staphylococcus aureus colonization and toxin secretion, such as α-toxin, has been described as promoting HSV replication and could therefore contribute to EH.
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Affiliation(s)
- Alexia Damour
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers, Poitiers, France
| | - Magali Garcia
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers, Poitiers, France.,Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France
| | - Julien Seneschal
- INSERM U1035, BMGIC, Immuno-dermatologie ATIP-AVENIR, Bordeaux, France.,Département de Dermatologie and Dermatologie Pédiatrique, Centre national de référence pour les maladies rares de la peau, Hôpital Saint-André, Bordeaux, France
| | - Nicolas Lévêque
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers, Poitiers, France.,Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers, Poitiers, France.
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14
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Bodet C, Bruyère PJ, Ferré A, Kaux JF, Courtois AC. [Cervical spondylolysis : a rare fortuitous finding]. Rev Med Liege 2020; 75:767-769. [PMID: 33331698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A young patient consulted in our physical and rehabilitation medicine department following the onset of pain on the scapula area and at the base of his right upper limb after carrying a heavy load. After a couple of weeks, the patient also developed cervical pain. Fortuitously, the cervical scanner displayed a right C6 spondylolysis. Further evaluation by bone scan confirmed that this lesion was not recent and so probably not the cause of the symptoms. Cervical isthmic spondylolysis is a rare condition, much more common at the lumbar level and often ignored at the cervical one. The etiology, pahophysiology, imaging and treatment options for this cervical pathology are discussed in this article.
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Affiliation(s)
- C Bodet
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - P J Bruyère
- Service d'Imagerie médicale, CHR Citadelle, Liège, Belgique
| | - A Ferré
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHR Huy et CHU liège, Belgique
| | - J F Kaux
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - A C Courtois
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHR Huy, Belgique
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15
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Sauvant C, Bodet C, Moriclet T, Manto F, Bartsch V, Pirnay L, Kellens I, Maes N, Thys M, Kaux JF. [Role of physical and rehabilitation medicine in the aftermath of SARS-CoV-2 disease]. Rev Med Liege 2020; 75:153-158. [PMID: 33211439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
2020 will be remembered as the year of SARS-CoV-2 pandemic which confined most of the world's population at home. Rehabilitation units will have to face specific challenges to protect the vulnerable in-patients. Moreover, they must prepare for post-COVID-19 patients who might suffer from illness consequences or present a post intensive care syndrome secondary to the increased ICU length of stay. The purpose of this paper is to highlight the deficiencies of post-COVID-19 patients and suggest a decision algorithm to best match their needs.
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Affiliation(s)
- C Sauvant
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - C Bodet
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - T Moriclet
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - F Manto
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - V Bartsch
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - L Pirnay
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - I Kellens
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
| | - N Maes
- Département de Biostatistiques et d'Informations médico-économiques, CHU Liège, Belgique
| | - M Thys
- Département de Biostatistiques et d'Informations médico-économiques, CHU Liège, Belgique
| | - J F Kaux
- Service de Médecine physique, Réadaptation fonctionnelle et Traumatologie du sport, CHU Liège, Belgique
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16
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Chessa C, Bodet C, Jousselin C, Wehbe M, Lévêque N, Garcia M. Antiviral and Immunomodulatory Properties of Antimicrobial Peptides Produced by Human Keratinocytes. Front Microbiol 2020; 11:1155. [PMID: 32582097 PMCID: PMC7283518 DOI: 10.3389/fmicb.2020.01155] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 05/06/2020] [Indexed: 12/15/2022] Open
Abstract
Keratinocytes, the main cells of the epidermis, are the first site of replication as well as the first line of defense against many viruses such as arboviruses, enteroviruses, herpes viruses, human papillomaviruses, or vaccinia virus. During viral replication, these cells can sense virus associated molecular patterns leading to the initiation of an innate immune response composed of pro-inflammatory cytokines, chemokines, and antimicrobial peptides. Human keratinocytes produce and secrete at least nine antimicrobial peptides: human cathelicidin LL-37, types 1–4 human β-defensins, S100 peptides such as psoriasin (S100A7), calprotectin (S100A8/9) and koebnerisin (S100A15), and RNase 7. These peptides can exert direct antiviral effects on the viral particle or its replication cycle, and indirect antiviral activity, by modulating the host immune response. The purpose of this review is to summarize current knowledge of antiviral and immunomodulatory properties of human keratinocyte antimicrobial peptides.
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Affiliation(s)
- Céline Chessa
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France.,Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Clément Jousselin
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France.,Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Michel Wehbe
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Nicolas Lévêque
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France.,Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Magali Garcia
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France.,Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
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17
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Cho HS, Yum J, Larivière A, Lévêque N, Le QVC, Ahn B, Jeon H, Hong K, Soundrarajan N, Kim JH, Bodet C, Park C. Opossum Cathelicidins Exhibit Antimicrobial Activity Against a Broad Spectrum of Pathogens Including West Nile Virus. Front Immunol 2020; 11:347. [PMID: 32194564 PMCID: PMC7063992 DOI: 10.3389/fimmu.2020.00347] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/13/2020] [Indexed: 12/14/2022] Open
Abstract
This study aimed to characterize cathelicidins from the gray short-tailed opossum in silico and experimentally validate their antimicrobial effects against various pathogenic bacteria and West Nile virus (WNV). Genome-wide in silico analysis against the current genome assembly of the gray short-tailed opossum yielded 56 classical antimicrobial peptides (AMPs) from eight different families, among which 19 cathelicidins, namely ModoCath1 – 19, were analyzed in silico to predict their antimicrobial domains and three of which, ModoCath1, -5, and -6, were further experimentally evaluated for their antimicrobial activity, and were found to exhibit a wide spectrum of antimicroial effects against a panel of gram-positive and gram-negative bacterial strains. In addition, these peptides displayed low-to-moderate cytotoxicity in mammalian cells as well as stability in serum and various salt and pH conditions. Circular dichroism analysis of the spectra resulting from interactions between ModoCaths and lipopolysaccharides (LPS) showed formation of a helical structure, while a dual-dye membrane disruption assay and scanning electron microscopy analysis revealed that ModoCaths exerted bactericidal effects by causing membrane damage. Furthermore, ModoCath5 displayed potent antiviral activity against WNV by inhibiting viral replication, suggesting that opossum cathelicidins may serve as potentially novel antimicrobial endogenous substances of mammalian origin, considering their large number. Moreover, analysis of publicly available RNA-seq data revealed the expression of eight ModoCaths from five different tissues, suggesting that gray short-tailed opossums may be an interesting source of cathelicidins with diverse characteristics.
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Affiliation(s)
- Hye-Sun Cho
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
| | - Joori Yum
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
| | - Andy Larivière
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Nicolas Lévêque
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Quy Van Chanh Le
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
| | - ByeongYong Ahn
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
| | - Hyoim Jeon
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
| | - Kwonho Hong
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
| | | | - Jin-Hoi Kim
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, Poitiers, France
| | - Chankyu Park
- Department of Stem Cell and Regenerative Biotechnology, Konkuk University, Seoul, South Korea
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18
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Bodet C, Radermecker RP, Philips JC, Rorive M, Benmouna K, Forthomme B, Wang F, Kaux JF. [Pathologies of the musculoskeletal system in diabetes mellitus]. Rev Med Liege 2019; 74:572-579. [PMID: 31729845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Diabetes mellitus causes several micro- (nephropathy, neuropathy and retinopathy) and macro-vascular (coronary insufficiency, stroke, lower limb arteriopathy) complications. Some complications are less widely known, particularly the ones involving the musculoskeletal system. Even though diabetes is not specifically linked to these complications, it increases both their incidence and severity. The objective of this paper is to review the main musculoskeletal complications associated to diabetes. It describes the pathophysiology, symptomatology and treatments of these complications.
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Affiliation(s)
- C Bodet
- Service de Médecine Physique, Réadaptation Fonctionnelle et Traumatologie du Sport, CHU Liège, Belgique
| | - R P Radermecker
- Service de Diabétologie, Nutrition et Maladies métaboliques, CHU Liège, Belgique
| | - J C Philips
- Service de Diabétologie, Nutrition et Maladies métaboliques, CHU Liège, Belgique
| | - M Rorive
- Service de Diabétologie, Nutrition et Maladies métaboliques, CHU Liège, Belgique
| | - K Benmouna
- Service de Médecine Physique, Réadaptation Fonctionnelle et Traumatologie du Sport, CHU Liège, Belgique
| | - B Forthomme
- Service de Médecine Physique, Réadaptation Fonctionnelle et Traumatologie du Sport, CHU Liège, Belgique
| | - F Wang
- Service de Médecine Physique, Réadaptation Fonctionnelle et Traumatologie du Sport, CHU Liège, Belgique
| | - J F Kaux
- Service de Médecine Physique, Réadaptation Fonctionnelle et Traumatologie du Sport, CHU Liège, Belgique
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19
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Bernard F, Lerat V, Garnier J, Barrault C, Lêvéque N, Bodet C. 498 Innate immunity activation of sebocyte cells by living bacteria. Evidence of a potential immunosuppressive effect of DHT. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Roy M, Lebeau L, Chessa C, Damour A, Ladram A, Oury B, Boutolleau D, Bodet C, Lévêque N. Comparison of Anti-Viral Activity of Frog Skin Anti-Microbial Peptides Temporin-Sha and [K³]SHa to LL-37 and Temporin-Tb against Herpes Simplex Virus Type 1. Viruses 2019; 11:v11010077. [PMID: 30669255 PMCID: PMC6356695 DOI: 10.3390/v11010077] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 01/15/2019] [Accepted: 01/16/2019] [Indexed: 12/31/2022] Open
Abstract
Temporins are anti-microbial peptides synthesized in the skin of frogs of the Ranidae family. The few studies to date that have examined their anti-viral properties have shown that they have potential as anti-viral therapies. In this work, we evaluated the anti-herpes simplex virus type 1 (HSV-1) activity of the temporin-SHa (SHa) and its synthetic analog [K3]SHa. Human cathelicidin LL-37 and temporin-Tb (Tb), previously demonstrated to have anti-HSV-1 properties, were used as positive controls. We observed that SHa and [K3]SHa significantly inhibit HSV-1 replication in human primary keratinocytes when used at micromolar concentrations. This anti-viral activity was equivalent to that of Tb, but lower than that of LL-37. Transcriptomic analyses revealed that SHa did not act through the modulation of the cell innate immune response, but rather, displayed virucidal properties by reducing infectious titer of HSV-1 in suspension. In contrast, pre-incubation of the virus with LL-37 suggests that this peptide does not act directly on the viral particle at non-cytotoxic concentrations tested. The anti-HSV-1 activity of LL-37 appears to be due to the potentiation of cellular anti-viral defenses through the induction of interferon stimulated gene expression in infected primary keratinocytes. This study demonstrated that SHa and [K3]SHa, in addition to their previously reported antibacterial and antiparasitic activities, are direct-acting anti-HSV-1 peptides. Importantly, this study extends the little studied anti-viral attributes of frog temporins and offers perspectives for the development of new anti-HSV-1 therapies.
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Affiliation(s)
- Maëva Roy
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, 86000 Poitiers, France.
| | - Lucie Lebeau
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86000 Poitiers, France.
| | - Céline Chessa
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, 86000 Poitiers, France.
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86000 Poitiers, France.
| | - Alexia Damour
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, 86000 Poitiers, France.
| | - Ali Ladram
- Sorbonne Université, CNRS, Institut de Biologie Paris-Seine, IBPS, BIOSIPE, 75252 Paris, France.
| | - Bruno Oury
- Institut de Recherche pour le Développement (IRD), UMR 224 IRD-CNRS-Univ Montpellier 1 et 2 Maladies infectieuses et Vecteurs: écologie, génétique, évolution et contrôle (MiVegec), 34394 Montpellier, France.
- IRD, UMR 177 IRD-CIRAD, Interactions Hôtes-Vecteurs-Parasites-Environnement dans les maladies tropicales négligées dues aux Trypanosomatidae (InterTryp), 34394 Montpellier, France.
| | - David Boutolleau
- Sorbonne Universités, Centre d'Immunologie et des Maladies Infectieuses (CIMI-Paris), INSERM U1135, Eq1, 75013 Paris, France.
- AP-HP, Hôpitaux Universitaires La Pitié Salpêtrière-Charles Foix, Service de Virologie, Centre National de Référence Herpèsvirus, 75652 Paris, France.
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, 86000 Poitiers, France.
| | - Nicolas Lévêque
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, LITEC EA 4331, Université de Poitiers, 86000 Poitiers, France.
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, 86000 Poitiers, France.
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21
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Garcia M, Alout H, Diop F, Damour A, Bengue M, Weill M, Missé D, Lévêque N, Bodet C. Innate Immune Response of Primary Human Keratinocytes to West Nile Virus Infection and Its Modulation by Mosquito Saliva. Front Cell Infect Microbiol 2018; 8:387. [PMID: 30450338 PMCID: PMC6224356 DOI: 10.3389/fcimb.2018.00387] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 10/12/2018] [Indexed: 12/13/2022] Open
Abstract
West Nile Virus (WNV) is a flavivirus involved in many human infections worldwide. This arthropod-borne virus is directly co-inoculated with mosquito saliva through the epidermis and the dermis during blood meal. WNV starts replicating in the skin before migrating to the draining lymph node, leading to widespread viremia and in some cases to neurological symptoms. Skin is a complex organ composed of different cell types that together perform essential functions such as pathogen sensing, barrier maintenance and immunity. Keratinocytes, which represent 90% of the cells of the epidermis, are the organism's first line of defense, initiating innate immune response by recognizing pathogens through their pattern recognition receptors. Although WNV was previously known to replicate in human primary keratinocytes, the induced inflammatory response remains unknown. The aim of this study was first to characterize the inflammatory response of human primary keratinocytes to WNV infection and then, to assess the potential role of co-inoculated mosquito saliva on the keratinocyte immune response and viral replication. A type I and III interferon inflammatory response associated with an increase of IRF7 but not IRF3 mRNA expression, and dependent on infectious dose, was observed during keratinocyte infection with WNV. Expression of several interferon-stimulated gene mRNA was also increased at 24 h post-infection (p.i.); they included CXCL10 and interferon-induced proteins with tetratricopeptide repeats (IFIT)-2 sustained up until 48 h p.i. Moreover, WNV infection of keratinocyte resulted in a significant increase of pro-inflammatory cytokines (TNFα, IL-6) and various chemokines (CXCL1, CXCL2, CXCL8 and CCL20) expression. The addition of Aedes aegypti or Culex quinquefasciatus mosquito saliva, two vectors of WNV infection, to infected keratinocytes led to a decrease of inflammatory response at 24 h p.i. However, only Ae. Aegypti saliva adjunction induced modulation of viral replication. In conclusion, this work describes for the first time the inflammatory response of human primary keratinocytes to WNV infection and its modulation in presence of vector mosquito saliva. The effects of mosquito saliva assessed in this work could be involved in the early steps of WNV replication in skin promoting viral spread through the body.
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Affiliation(s)
- Magali Garcia
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France.,Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, EA 4331, Université de Poitiers, Poitiers, France
| | - Haoues Alout
- Institut des Sciences de l'Evolution, Université de Montpellier, Montpellier, France
| | - Fodé Diop
- MIVEGEC UMR 224, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - Alexia Damour
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, EA 4331, Université de Poitiers, Poitiers, France
| | - Michèle Bengue
- MIVEGEC UMR 224, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - Mylène Weill
- Institut des Sciences de l'Evolution, Université de Montpellier, Montpellier, France
| | - Dorothée Missé
- MIVEGEC UMR 224, Université de Montpellier, IRD, CNRS, Montpellier, France
| | - Nicolas Lévêque
- Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers, Poitiers, France.,Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, EA 4331, Université de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, EA 4331, Université de Poitiers, Poitiers, France
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Cremniter J, Bodet C, Tougeron D, Dray X, Guilhot J, Jégou JF, Morel F, Lecron JC, Silvain C, Burucoa C. Th-17 response and antimicrobial peptide expression are uniformly expressed in gastric mucosa of Helicobacter pylori-infected patients independently of their clinical outcomes. Helicobacter 2018; 23:e12479. [PMID: 29582503 DOI: 10.1111/hel.12479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The pathological determinism of H. pylori infection is explained by complex interplay between bacterial virulence and host inflammatory response. In a large prospective multicenter clinical study, Th17 response, expression of antimicrobial peptides (AMPs), cagA and vacA status, and bacterial density were investigated in the gastric mucosa of H. pylori -infected patients. MATERIALS AND METHODS Gastric inflammatory response was analyzed by RT-qPCR for quantification of Th17 cytokines (IL-17A, IL-22), CXCL-8, and AMPs (BD2 and S100A9) mRNA levels in gastric biopsies. Detection and genotyping of H. pylori strains were achieved by bacterial culture and PCR. RESULTS Among 787 patients screened for H. pylori, 269 were analyzed (147 H. pylori -infected and 122 uninfected patients). In H. pylori -infected patients, distribution was 83 gastritis, 12 duodenal ulcers, 5 gastric ulcers, and 47 precancerous and cancerous lesions. CXCL-8, IL-17A, BD2, and S100A9 mRNA levels were significantly increased in H. pylori -infected patients but, surprisingly, IL-22 was not, and no difference was shown between H. pylori -related diseases. A positive correlation was identified between S100A9 expression and bacterial density. Although expression of the virulence genes cagA and vacA did not impact inflammatory response, patients infected with a cagA-positive strain were associated with severe H. pylori -related diseases. CONCLUSION This study showed that CXCL-8, IL-17A, and AMPs are not differently expressed according to the various H. pylori -related diseases. The clinical outcome determinism of H. pylori infection is most likely not driven by gastric inflammation but rather tends to mainly influenced by bacterial virulence factors.
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Affiliation(s)
- Julie Cremniter
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France.,Department of Bacteriology, Poitiers University Hospital, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France
| | - David Tougeron
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France.,Department of Gastroenterology, Poitiers University Hospital, Poitiers, France
| | - Xavier Dray
- Department of Gastroenterology, Sorbonne Paris Cité Paris 7 University, APHP Lariboisière Hospital, Paris, France
| | - Joëlle Guilhot
- Centre d'Investigation Clinique1402 INSERM, Poitiers University Hospital, Poitiers, France
| | - Jean-François Jégou
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France
| | - Franck Morel
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France
| | - Jean-Claude Lecron
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France.,Department of Inflammation and Immunology, Poitiers University Hospital, Poitiers, France
| | - Christine Silvain
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France.,Department of Gastroenterology, Poitiers University Hospital, Poitiers, France
| | - Christophe Burucoa
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC), Université de Poitiers, Poitiers, France.,Department of Bacteriology, Poitiers University Hospital, Poitiers, France
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23
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Garcia M, Morello E, Garnier J, Barrault C, Garnier M, Burucoa C, Lecron JC, Si-Tahar M, Bernard FX, Bodet C. Pseudomonas aeruginosa flagellum is critical for invasion, cutaneous persistence and induction of inflammatory response of skin epidermis. Virulence 2018; 9:1163-1175. [PMID: 30070169 PMCID: PMC6086312 DOI: 10.1080/21505594.2018.1480830] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/21/2018] [Indexed: 12/22/2022] Open
Abstract
Pseudomonas aeruginosa, an opportunistic pathogen involved in skin and lung diseases, possesses numerous virulence factors, including type 2 and 3 secretion systems (T2SS and T3SS) and its flagellum, whose functions remain poorly known during cutaneous infection. Using isogenic mutants deleted from genes encoding each or all of these three virulence factors, we investigated their role in induction of inflammatory response and in tissue invasiveness in human primary keratinocytes and reconstructed epidermis. Our results showed that flagellum, but not T2SS and T3SS, is involved in induction of a large panel of cytokine, chemokine, and antimicrobial peptide (AMP) mRNA in the infected keratinocytes. Chemokine secretion and AMP tissular production were also dependent on the presence of the bacterial flagellum. This pro-inflammatory effect was significantly reduced in keratinocytes infected in presence of anti-toll-like receptor 5 (TLR5) neutralizing antibody. Bacterial invasion of human epidermis and persistence in a mouse model of sub-cutaneous infection were dependent on the P. aeruginosa flagellum. We demonstrated that flagellum constitutes the main virulence factor of P. aeruginosa involved not only in early induction of the epidermis inflammatory response but also in bacterial invasion and cutaneous persistence. P. aeruginosa is mainly sensed by TLR5 during the early innate immune response of human primary keratinocytes.
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Affiliation(s)
- Magali Garcia
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Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers
, Poitiers, France
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Laboratoire de Virologie et Mycobactériologie, CHU de Poitiers
, Poitiers, France
| | - Eric Morello
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Centre d'Etude des Pathologies Respiratoires, INSERM UMR 1100, Université de Tours
, Tours, France
| | | | | | - Martine Garnier
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Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers
, Poitiers, France
| | - Christophe Burucoa
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Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers
, Poitiers, France
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Laboratoire de Bactériologie et Hygiène, CHU de Poitiers
, Poitiers, France
| | - Jean-Claude Lecron
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Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers
, Poitiers, France
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Laboratoire d’Immunologie et Inflammation, CHU de Poitiers
, Poitiers, France
| | - Mustapha Si-Tahar
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Centre d'Etude des Pathologies Respiratoires, INSERM UMR 1100, Université de Tours
, Tours, France
| | | | - Charles Bodet
-
Laboratoire Inflammation Tissus Epithéliaux et Cytokines EA 4331, Université de Poitiers
, Poitiers, France
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24
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Couderc E, Morel F, Levillain P, Buffière-Morgado A, Camus M, Paquier C, Bodet C, Jégou JF, Pohin M, Favot L, Garcia M, Huguier V, Mcheik J, Lacombe C, Yssel H, Guillet G, Bernard FX, Lecron JC. Interleukin-17A-induced production of acute serum amyloid A by keratinocytes contributes to psoriasis pathogenesis. PLoS One 2017; 12:e0181486. [PMID: 28708859 PMCID: PMC5510841 DOI: 10.1371/journal.pone.0181486] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/30/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Acute-serum Amyloid A (A-SAA), one of the major acute-phase proteins, is mainly produced in the liver but extra-hepatic synthesis involving the skin has been reported. Its expression is regulated by the transcription factors NF-κB, C/EBPβ, STAT3 activated by proinflammatory cytokines. OBJECTIVES We investigated A-SAA synthesis by resting and cytokine-activated Normal Human Epidermal Keratinocytes (NHEK), and their inflammatory response to A-SAA stimulation. A-SAA expression was also studied in mouse skin and liver in a model mimicking psoriasis and in the skin and sera of psoriatic and atopic dermatitis (AD) patients. METHODS NHEK were stimulated by A-SAA or the cytokines IL-1α, IL-17A, IL-22, OSM, TNF-α alone or in combination, previously reported to reproduce features of psoriasis. Murine skins were treated by imiquimod cream. Human skins and sera were obtained from patients with psoriasis and AD. A-SAA mRNA was quantified by RT qPCR. A-SAA proteins were dosed by ELISA or immunonephelemetry assay. RESULTS IL-1α, TNF-α and mainly IL-17A induced A-SAA expression by NHEK. A-SAA induced its own production and the synthesis of hBD2 and CCL20, both ligands for CCR6, a chemokine receptor involved in the trafficking of Th17 lymphocytes. A-SAA expression was increased in skins and livers from imiquimod-treated mice and in patient skins with psoriasis, but not significantly in those with AD. Correlations between A-SAA and psoriasis severity and duration were observed. CONCLUSION Keratinocytes could contribute to psoriasis pathogenesis via A-SAA production, maintaining a cutaneous inflammatory environment, activating innate immunity and Th17 lymphocyte recruitment.
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Affiliation(s)
- Elodie Couderc
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service de Dermatologie, CHU de Poitiers, Poitiers, France
| | - Franck Morel
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
| | | | - Amandine Buffière-Morgado
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service de Dermatologie, CHU de Poitiers, Poitiers, France
| | - Magalie Camus
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service de Dermatologie, CHU de Poitiers, Poitiers, France
| | - Camille Paquier
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service de Dermatologie, CHU de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
| | - Jean-François Jégou
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
| | - Mathilde Pohin
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
| | - Laure Favot
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
| | - Martine Garcia
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
| | - Vincent Huguier
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service de Dermatologie, CHU de Poitiers, Poitiers, France
- Service d’Anatomopathologie, CHU de Poitiers, Poitiers, France
- Service de Chirurgie plastique, CHU de Poitiers, Poitiers, France
| | - Jiad Mcheik
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service de Dermatologie, CHU de Poitiers, Poitiers, France
- Service d’Anatomopathologie, CHU de Poitiers, Poitiers, France
- Service de Chirurgie plastique, CHU de Poitiers, Poitiers, France
- Service de Chirurgie pédiatrique, CHU de Poitiers, Poitiers, France
| | - Corinne Lacombe
- Service d’Anatomopathologie, CHU de Poitiers, Poitiers, France
- Service d’Immunologie et Inflammation, CHU de Poitiers, Poitiers, France
| | - Hans Yssel
- Centre d'Immunologie et des Maladies Infectieuses, Inserm U1135, Hôpital Pitié-Salpêtrière, Paris, France
| | - Gérard Guillet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service de Dermatologie, CHU de Poitiers, Poitiers, France
| | | | - Jean-Claude Lecron
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, UPRES EA4331, Pôle Biologie Santé, Université de Poitiers, TSA, POITIERS, France
- Service d’Immunologie et Inflammation, CHU de Poitiers, Poitiers, France
- * E-mail:
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25
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Ahama-Esseh K, Bodet C, Quashie-Mensah-Attoh A, Garcia M, Théry-Koné I, Dorat J, De Souza C, Enguehard-Gueiffier C, Boudesocque-Delaye L. Anti-inflammatory activity of Crateva adansonii DC on keratinocytes infected by Staphylococcus aureus: From traditional practice to scientific approach using HPTLC-densitometry. J Ethnopharmacol 2017; 204:26-35. [PMID: 28392456 DOI: 10.1016/j.jep.2017.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 03/30/2017] [Accepted: 04/02/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLIGICAL RELEVANCE Leaves of Crateva adansonii DC (Capparidaceae), a small bush found in Togo, are widely used in traditional medicine to cure infectious abscesses. Traditional healers of Lomé harvest only budding leaves early in the morning, in specific area in order to prepare their drugs. AIM OF THE STUDY The main goal was to validate the ancestral picking practices, and to assess the activity of C. adansonii medicine towards infectious abscesses. MATERIALS AND METHODS A phytochemical screening of various C. adansonii leaf samples was performed using an original HPTLC-densitometry protocol and major flavonoids were identified and quantified. C. adansonii samples were collected in different neighborhoods of Lomé, at different harvesting-times and at different ages. Radical scavenging capacity, using DPPH assay, was used to quickly screen all extracts. Extracts were tested for anti-Staphylococcus aureus activity and anti-inflammatory effect on human primary keratinocytes infected by S. aureus. IL6, IL8 and TNFα expression and production were assessed by RT-PCR and ELISA assays. RESULTS Using antioxidant activity as selection criteria, optimal extracts were obtained with budding leaves, collected at 5:00am in Djidjolé neighborhood. This extract showed the strongest anti-inflammatory effect on S. aureus-infected keratinocytes by reducing IL6, IL8 and TNFα expression and production. None of the extracts inhibited the growth of S. aureus. CONCLUSIONS Those results validate the traditional practices and the potential of C. adansonii as anti-inflammatory drug. Our findings suggest that traditional healers should add to C. adansonii leaves an antibacterial plant of Togo Pharmacopeia, in order to improve abscess healing.
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Affiliation(s)
- Kplolali Ahama-Esseh
- Université de Tours, UMR INRA 1282 Infectiologie et Santé Publique, 31 avenue Monge, 37200 Tours, France; Université de Lomé, Laboratoire de Physiologie et de Biotechnologies végétales, Faculté des Sciences, BP 1515 Lomé, Togo; Université de Lomé, Laboratoire de Microbiologie et de Contrôle de Qualité des Denrées Alimentaires, BP 1515 Lomé, Togo
| | - Charles Bodet
- Université de Poitiers, Laboratoire Inflammation Tissus Epithéliaux et Cytokines, Poitiers, France
| | - Akossiwa Quashie-Mensah-Attoh
- Université de Lomé, Laboratoire de Physiologie et de Biotechnologies végétales, Faculté des Sciences, BP 1515 Lomé, Togo
| | - Magali Garcia
- Université de Poitiers, Laboratoire Inflammation Tissus Epithéliaux et Cytokines, Poitiers, France; Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Isabelle Théry-Koné
- Université de Tours, UMR INRA 1282 Infectiologie et Santé Publique, 31 avenue Monge, 37200 Tours, France
| | - Joelle Dorat
- Université de Tours, UMR INRA 1282 Infectiologie et Santé Publique, 31 avenue Monge, 37200 Tours, France
| | - Comlan De Souza
- Université de Lomé, Laboratoire de Microbiologie et de Contrôle de Qualité des Denrées Alimentaires, BP 1515 Lomé, Togo
| | - Cécile Enguehard-Gueiffier
- Université de Tours, UMR INSERM 1069 N2C Nutrition Croissance et Cancer, 31 avenue Monge, 37200 Tours, France
| | - Leslie Boudesocque-Delaye
- Université de Tours, UMR INRA 1282 Infectiologie et Santé Publique, 31 avenue Monge, 37200 Tours, France.
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Garcia M, Chomel JC, Mustapha P, Tran CT, Garnier M, Paris I, Quellard N, Godet J, Cremniter J, Bennaceur-Griscelli A, Lecron JC, Turhan AG, Burucoa C, Bodet C. In vitro culture and phenotypic and molecular characterization of gastric stem cells from human stomach. Helicobacter 2017; 22. [PMID: 27592706 DOI: 10.1111/hel.12351] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Human gastric mucosa shows continuous self-renewal via differentiation from stem cells that remain poorly characterized. METHODS We describe an original protocol for culture of gastric stem/progenitor cells from adult human stomach. The molecular characteristics of cells were studied using TaqMan low-density array and qRT-PCR analyses using the well-characterized H1 and H9 embryonic stem cells as reference. Epithelial progenitor cells were challenged with H. pylori to characterize their inflammatory response. RESULTS Resident gastric stem cells expressed specific molecular markers of embryonic stem cells (SOX2, NANOG, and OCT4), as well as others specific to adult stem cells, particularly LGR5 and CD44. We show that gastric stem cells spontaneously differentiate into epithelial progenitor cells that can be challenged with H. pylori. The epithelial progenitor response to H. pylori showed a cag pathogenicity island-dependent induction of matrix metalloproteinases 1 and 3, chemokine (CXCL1, CXCL5, CXCL8, CCL20) and interleukine 33 expression. CONCLUSION This study opens new outlooks for investigation of gastric stem cell biology and pathobiology as well as host-H. pylori interactions.
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Affiliation(s)
- Magali Garcia
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France.,Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Jean-Claude Chomel
- Centre Hospitalier Universitaire de Poitiers, Poitiers, France.,Inserm U935, Université de Poitiers, Poitiers, France
| | - Pascale Mustapha
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France
| | - Cong Tri Tran
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France.,Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Martine Garnier
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France.,Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Isabelle Paris
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France.,Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | | | - Julie Godet
- Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Julie Cremniter
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France.,Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Annelise Bennaceur-Griscelli
- Inserm U935, Université de Poitiers, Poitiers, France.,Inserm U935, Hôpitaux Universitaires Paris Sud, Hôpital Bicêtre & Paul Brousse, Université Paris-Sud, Villejuif, France
| | - Jean-Claude Lecron
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France.,Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Ali G Turhan
- Inserm U935, Université de Poitiers, Poitiers, France.,Inserm U935, Hôpitaux Universitaires Paris Sud, Hôpital Bicêtre & Paul Brousse, Université Paris-Sud, Villejuif, France
| | - Christophe Burucoa
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France.,Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines, Université de Poitiers, Poitiers, France
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Bodet C, Chandad F, Grenier D. Anti-inflammatory Activity of a High-molecular-weight Cranberry Fraction on Macrophages Stimulated by Lipopolysaccharides from Periodontopathogens. J Dent Res 2016; 85:235-9. [PMID: 16498070 DOI: 10.1177/154405910608500306] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Periodontitis is a chronic inflammatory disease affecting oral tissues. The continuous, high production of cytokines by host cells triggered by periodontopathogens is thought to be responsible for the destruction of tooth-supporting tissues. Macrophages play a critical role in this host inflammatory response to periodontopathogens. The aim of this study was to investigate the effect of non-dialyzable material prepared from cranberry juice concentrate on the pro-inflammatory cytokine response of macrophages induced by lipopolysaccharides (LPS) from Actinobacillus actinomycetemcomitans, Fusobacterium nucleatum subsp. nucleatum, Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia, and Escherichia coli. Interleukin-1 beta (IL-1β), IL-6, IL-8, tumor necrosis factor alpha (TNF-α), and Regulated on Activation Normal T-cell Expressed and Secreted (RANTES) production by macrophages treated with the cranberry fraction prior to stimulation by LPS was evaluated by ELISA. Our results clearly indicate that the cranberry fraction was a potent inhibitor of the pro-inflammatory cytokine and chemokine responses induced by LPS. This suggests that cranberry constituents may offer perspectives for the development of a new therapeutic approach to the prevention and treatment of periodontitis.
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Affiliation(s)
- C Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec City, Québec, Canada G1K 7P4
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Tran CT, Garcia M, Garnier M, Burucoa C, Bodet C. Inflammatory signaling pathways induced by Helicobacter pylori in primary human gastric epithelial cells. Innate Immun 2016; 23:165-174. [DOI: 10.1177/1753425916681077] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Inflammatory signaling pathways induced by Helicobacter pylori remain unclear, having been studied mostly on cell-line models derived from gastric adenocarcinoma with potentially altered signaling pathways and nonfunctional receptors. Here, H. pylori-induced signaling pathways were investigated in primary human gastric epithelial cells. Inflammatory response was analyzed on chemokine mRNA expression and production after infection of gastric epithelial cells by H. pylori strains, B128 and B128Δ cagM, a cag type IV secretion system defective strain. Signaling pathway involvement was investigated using inhibitors of epidermal growth factor receptor (EGFR), MAPK, JAK and blocking Abs against TLR2 and TLR4. Inhibitors of EGFR, MAPK and JAK significantly reduced the chemokine mRNA expression and production induced by both H. pylori strains at 3 h and 24 h post-infection. JNK inhibitor reduced chemokine production at 24 h post-infection. Blocking Abs against TLR2 but not TLR4 showed significant reduction of chemokine secretion. Using primary culture of human gastric epithelial cells, our data suggest that H. pylori can be recognized by TLR2, leading to chemokine induction, and that EGFR, MAPK and the JAK/STAT signaling pathways play a key role in the H. pylori-induced CXCL1, CXCL5 and CXCL8 response in a cag pathogenicity island-independent manner.
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Affiliation(s)
- Cong Tri Tran
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, Poitiers, France
- Laboratoire de Bactériologie Hygiène, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Magali Garcia
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, Poitiers, France
- Laboratoire de Bactériologie Hygiène, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Martine Garnier
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, Poitiers, France
- Laboratoire de Bactériologie Hygiène, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Christophe Burucoa
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, Poitiers, France
- Laboratoire de Bactériologie Hygiène, Centre Hospitalier Universitaire de Poitiers, Poitiers, France
| | - Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, Poitiers, France
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29
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Boudesocque-Delaye L, Agostinho D, Bodet C, Thery-Kone I, Allouchi H, Gueiffier A, Nuzillard JM, Enguehard-Gueiffier C. Antibacterial Polyketide Heterodimers from Pyrenacantha kaurabassana Tubers. J Nat Prod 2015; 78:597-603. [PMID: 25756503 DOI: 10.1021/np5003252] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two heterodimers comprising anthraquinone and methylbenzoisocoumarin moieties (1 and 2) were isolated, together with emodin and physcion from the tubers of Pyrenacantha kaurabassana. The structures of 1 and 2 were established by NMR spectroscopy, including the analysis of a 2D INADEQUATE spectrum. On the basis of the data obtained, the structures that were previously proposed in the literature for these compounds were revised. Compounds 1 and 2 showed antibacterial activity against three different strains of Staphylococcus aureus. Compound 2 also showed bactericidal activity against Helicobacter pylori.
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Affiliation(s)
- Leslie Boudesocque-Delaye
- †Equipe Recherche et Innovation en Chimie Médicinale, UMR INRA 1282 Infectiologie et Santé Publique, Université de Tours François Rabelais, 37200 Tours, France
| | - Daniel Agostinho
- †Equipe Recherche et Innovation en Chimie Médicinale, UMR INRA 1282 Infectiologie et Santé Publique, Université de Tours François Rabelais, 37200 Tours, France
| | - Charles Bodet
- ‡Laboratoire Inflammation, Tissus Epithéliaux et Cytokines EA4331, Université de Poitiers, 86022 Poitiers, France
| | - Isabelle Thery-Kone
- †Equipe Recherche et Innovation en Chimie Médicinale, UMR INRA 1282 Infectiologie et Santé Publique, Université de Tours François Rabelais, 37200 Tours, France
| | - Hassan Allouchi
- †Equipe Recherche et Innovation en Chimie Médicinale, UMR INRA 1282 Infectiologie et Santé Publique, Université de Tours François Rabelais, 37200 Tours, France
| | - Alain Gueiffier
- †Equipe Recherche et Innovation en Chimie Médicinale, UMR INRA 1282 Infectiologie et Santé Publique, Université de Tours François Rabelais, 37200 Tours, France
| | - Jean-Marc Nuzillard
- §Institut de Chimie Moléculaire de Reims UMR CNRS 7312, Université Reims Champagne-Ardenne, 51100 Reims, France
| | - Cécile Enguehard-Gueiffier
- †Equipe Recherche et Innovation en Chimie Médicinale, UMR INRA 1282 Infectiologie et Santé Publique, Université de Tours François Rabelais, 37200 Tours, France
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Bodet C, Burucoa C, Rouillon S, Bellin N, Taddeo VA, Fiorito S, Genovese S, Epifano F. Antibacterial activities of oxyprenylated chalcones and napthtoquinone against Helicobacter pylori. Nat Prod Commun 2014; 9:1299-1301. [PMID: 25918797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Abstract
In this study, we synthesized and characterized the antibacterial activity of three naturally occurring oxyprenylated chalcones {xinjiachalcone A (1), (2E)-1-{2,6-dihydroxy-4-[(3-methylbut-2-enyl)oxy]phenyl}-3-(4-hydroxyphenyl)prop-2-en-1-one (2), (2E)-1-{2,6-dihydroxy-4-[(3-methylbut-2-enyl)oxy]phenyl}-3-phenylprop-2-en-1-one (3), and lawsone 2-isopentenyl ether (4)}. Using several strains of Helicobacter pylori, including clinical ones, minimum inhibitory concentration (MIC) values and bactericidal activities of these compounds were determined. Xinjiachalcone A (1), active principle of Glycyrrhiza inflata Batalin, was the most effective compound, showing both a low MIC and a strong bactericidal activity against H. pylori. This study suggests that these compounds represent potential natural molecules for the prevention and treatment of H. pylori associated diseases.
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Bodet C, Burucoa C, Rouillon S, Bellin N, Taddeo VA, Fiorito S, Genovese S, Epifano F. Antibacterial Activities of Oxyprenylated Chalcones and Napthtoquinone against Helicobacter pylori. Nat Prod Commun 2014. [DOI: 10.1177/1934578x1400900920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
In this study, we synthesized and characterized the antibacterial activity of three naturally occurring oxyprenylated chalcones {xinjiachalcone A (1), (2 E)-1-{2,6-dihydroxy-4-[(3-methylbut-2-enyl)oxy]phenyl}-3-(4-hydroxyphenyl)prop-2-en-1-one (2), (2 E)-1-{2,6-dihydroxy-4-[(3-methylbut-2-enyl)oxy]phenyl}-3-phenylprop-2-en-1-one (3), and lawsone 2-isopentenyl ether (4)}. Using several strains of Helicobacter pylori, including clinical ones, minimum inhibitory concentration (MIC) values and bactericidal activities of these compounds were determined. Xinjiachalcone A (1), active principle of Glycyrrhiza inflata Batalin, was the most effective compound, showing both a low MIC and a strong bactericidal activity against H. pylori. This study suggests that these compounds represent potential natural molecules for the prevention and treatment of H. pylori associated diseases.
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Affiliation(s)
- Charles Bodet
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, France
| | - Christophe Burucoa
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, France
- Centre Hospitalier Universitaire de Poitiers, France
| | - Steeve Rouillon
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, France
| | - Nicolas Bellin
- Laboratoire Inflammation, Tissus Epithéliaux et Cytokines (LITEC - EA 4331), Université de Poitiers, France
| | - Vito Alessandro Taddeo
- Department of Pharmacy, University “G. D'Annunzio” of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Serena Fiorito
- Department of Pharmacy, University “G. D'Annunzio” of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Salvatore Genovese
- Department of Pharmacy, University “G. D'Annunzio” of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
| | - Francesco Epifano
- Department of Pharmacy, University “G. D'Annunzio” of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti Scalo (CH), Italy
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Bodet C, Sahr T, Dupuy M, Buchrieser C, Héchard Y. Legionella pneumophila transcriptional response to chlorine treatment. Water Res 2012; 46:808-816. [PMID: 22192759 DOI: 10.1016/j.watres.2011.11.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 11/18/2011] [Accepted: 11/19/2011] [Indexed: 05/31/2023]
Abstract
Legionella pneumophila is a ubiquitous environmental microorganism found in freshwater that can cause an acute form of pneumonia known as Legionnaires' disease. Despite widespread use of chlorine to ensure drinking water quality and awareness that L. pneumophila may escape these treatments, little is known about its effects on L. pneumophila. The aim of this study was to investigate the L. pneumophila transcriptional response induced by chlorine treatment. Transcriptome analysis, using DNA arrays, showed that a sublethal dose of chlorine induces a differential expression of 391 genes involved in stress response, virulence, general metabolism, information pathways and transport. Many of the stress response genes were significantly upregulated, whereas a significant number of virulence genes were repressed. In particular, exposure of L. pneumophila to chlorine induced the expression of cellular antioxidant proteins, stress proteins and transcriptional regulators. In addition, glutathione S-transferase specific activity was enhanced following chlorine treatment. Our results clearly indicate that chlorine induces expression of proteins involved in cellular defence mechanisms against oxidative stress that might be involved in adaptation or resistance to chlorine treatment.
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Affiliation(s)
- Charles Bodet
- Laboratoire de Chimie et Microbiologie de l'Eau, UMR 6008, Université de Poitiers, 40 avenue du Recteur Pineau, 86022 Poitiers Cedex, France.
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Dupuy M, Mazoua S, Berne F, Bodet C, Garrec N, Herbelin P, Ménard-Szczebara F, Oberti S, Rodier MH, Soreau S, Wallet F, Héchard Y. Efficiency of water disinfectants against Legionella pneumophila and Acanthamoeba. Water Res 2011; 45:1087-94. [PMID: 21093012 DOI: 10.1016/j.watres.2010.10.025] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 10/18/2010] [Accepted: 10/19/2010] [Indexed: 05/07/2023]
Abstract
Free-living amoebae might be pathogenic by themselves and be a reservoir for bacterial pathogens, such as Legionella pneumophila. Not only could amoebae protect intra-cellular Legionella but Legionella grown within amoebae could undergo physiological modifications and become more resistant and more virulent. Therefore, it is important to study the efficiency of treatments on amoebae and Legionella grown within these amoebae to improve their application and to limit their impact on the environment. With this aim, we compared various water disinfectants against trophozoites of three Acanthamoeba strains and L. pneumophila alone or in co-culture. Three oxidizing disinfectants (chlorine, monochloramine, and chlorine dioxide) were assessed. All the samples were treated with disinfectants for 1 h and the disinfectant concentration was followed to calculate disinfectant exposure (Ct). We noticed that there were significant differences of susceptibility among the Acanthamoeba strains. However no difference was observed between infected and non-infected amoebae. Also, the comparison between the three disinfectants indicates that monochloramine was efficient at the same level towards free or co-cultured L. pneumophila while chlorine and chlorine dioxide were less efficient on co-cultured L. pneumophila. It suggests that these disinfectants should have different modes of action. Finally, our results provide for the first time disinfectant exposure values for Acanthamoeba treatments that might be used as references for disinfection of water systems.
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Affiliation(s)
- Mathieu Dupuy
- Université de Poitiers, Laboratoire de Chimie et Microbiologie de l'Eau, CNRS UMR 6008, 40 avenue du recteur Pineau, 86022 Poitiers Cedex, France
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Bodet C, Grenier D. Synergistic effects of lipopolysaccharides from periodontopathic bacteria on pro-inflammatory cytokine production in an ex vivo whole blood model. Mol Oral Microbiol 2010; 25:102-11. [PMID: 20331798 DOI: 10.1111/j.2041-1014.2010.00566.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Porphyromonas gingivalis, Treponema denticola, and Tannerella forsythia have been strongly associated with chronic periodontitis. This disease is characterized by an accumulation of inflammatory cells in periodontal tissue and subgingival sites. The secretion of high levels of inflammatory cytokines by those cells is believed to contribute to periodontal tissue destruction. The aim of this study was to investigate the inflammatory response of whole blood from periodontitis patients following challenges with whole cells of P. gingivalis, T. denticola, and T. forsythia or their lipopolysaccharides (LPS), individually and in combination. Whole blood collected from seven periodontitis patients was stimulated with whole cells or LPS and the production of interleukin (IL)-1beta, IL-6, IL-8, and tumor necrosis factor alpha (TNF-alpha) were quantified by enzyme-linked immunosorbent assays. The mono and mixed challenges with whole bacterial cells or LPS induced the secretion of high amounts of IL-1beta, IL-6, IL-8, and TNF-alpha by the mixed leukocyte population from periodontitis patients. In addition, P. gingivalis LPS, T. denticola LPS, and T. forsythia LPS acted in synergy to induce high levels of IL-1beta and TNF-alpha. This study suggests that P. gingivalis, T. denticola, and T. forsythia may contribute to the immunodestructive host response characteristic of periodontitis through synergistic effects of their LPS on the inflammatory response induced by a mixed population of leukocytes.
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Affiliation(s)
- C Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de médecine dentaire, Université Laval, Quebec City, Quebec, Canada
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Tanabe SI, Bodet C, Grenier D. Treponema denticolapeptidoglycan induces the production of inflammatory mediators and matrix metalloproteinase 9 in macrophage-like cells. J Periodontal Res 2009; 44:503-10. [DOI: 10.1111/j.1600-0765.2008.01141.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bodet C, La VD, Epifano F, Grenier D. Naringenin has anti-inflammatory properties in macrophage and ex vivo human whole-blood models. J Periodontal Res 2008; 43:400-7. [PMID: 18503517 DOI: 10.1111/j.1600-0765.2007.01055.x] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE Periodontitis is a chronic inflammatory disease of bacterial etiology, affecting tooth-supporting tissues. The host inflammatory response to periodontopathogens, notably the high and continuous production of cytokines, is considered a major factor causing the local tissue destruction observed in periodontitis. The aim of the present study was to investigate the effect of naringenin, a major flavanone in grapefruits and tomatoes, on the lipopolysaccharide-induced pro-inflammatory cytokine production by host cells, using two different models. MATERIAL AND METHODS The effect of naringenin was characterized using macrophages stimulated with the lipopolysaccharide of either Aggregatibacter actinomycetemcomitans or Escherichia coli and using whole blood stimulated with A. actinomycetemcomitans lipopolysaccharide, in the presence or absence of naringenin. Lipopolysaccharide-induced interleukin-1 beta, interleukin-6, interleukin-8 and tumor necrosis factor-alpha production by macrophages and whole-blood samples treated with naringenin were evaluated using an enzyme-linked immunosorbent assay. Changes in the phosphorylation states of macrophage kinases induced by A. actinomycetemcomitans lipopolysaccharide and naringenin were characterized by immunoblot screening. RESULTS Our results clearly indicated that naringenin is a potent inhibitor of the pro-inflammatory cytokine response induced by lipopolysaccharide in both macrophages and in whole blood. Naringenin markedly inhibited the phosphorylation on serines 63 and 73 of Jun proto-oncogene-encoded AP-1 transcription factor in lipopolysaccharide-stimulated macrophages. CONCLUSION The results from the present study suggest that naringenin holds promise as a therapeutic agent for treating inflammatory diseases such as periodontitis.
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Affiliation(s)
- C Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec G1K 7P4, Canada
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Cazalis J, Bodet C, Gagnon G, Grenier D. Doxycycline Reduces Lipopolysaccharide-Induced Inflammatory Mediator Secretion in Macrophage and Ex Vivo Human Whole Blood Models. J Periodontol 2008; 79:1762-8. [DOI: 10.1902/jop.2008.080051] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Bodet C, La VD, Gafner S, Bergeron C, Grenier D. A Licorice Extract Reduces Lipopolysaccharide-Induced Proinflammatory Cytokine Secretion by Macrophages and Whole Blood. J Periodontol 2008; 79:1752-61. [DOI: 10.1902/jop.2008.080052] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Tanabe SI, Bodet C, Grenier D. Treponema denticola lipooligosaccharide activates gingival fibroblasts and upregulates inflammatory mediator production. J Cell Physiol 2008; 216:727-31. [PMID: 18366071 DOI: 10.1002/jcp.21447] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In response to bacterial challenges, fibroblasts, a major constituent of gingival connective tissue, can produce immunoregulatory cytokines and proteolytic enzymes that may contribute to tissue destruction and the progression of periodontitis, a chronic inflammatory disease affecting tooth-supporting tissues, including alveolar bone. The spirochete Treponema denticola is a major etiological agent of periodontitis and can invade oral tissues. The aim of the present study was to investigate the inflammatory response of gingival fibroblasts to T. denticola lipooligosaccharide (LOS). T. denticola LOS induced significant production of various inflammatory mediators by fibroblasts, including interleukin-6, interleukin-8, monocyte chemoattractant protein 1, nitric oxide, and prostaglandin E(2). In addition, the secretion of matrix metalloproteinase 3, an enzyme active on basement membrane components, was also significantly increased. The response of fibroblasts was dose-dependent and much stronger following a 24 h stimulation period. The expression and/or phosphorylation state of several signaling proteins, including Fos, MKK1, MKK2, MKK3/6, NF-kappaB p50, and NF-kappaB p65, was enhanced following stimulation of fibroblasts with T. denticola LOS. In summary, T. denticola LOS induced an inflammatory response in gingival fibroblasts and may thus contribute to the immunopathogenesis of periodontitis and the progression of the disease.
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Affiliation(s)
- Shin-Ichi Tanabe
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada
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Abstract
Peptostreptococcus micros is a Gram-positive anaerobic bacterium associated with periodontitis, a chronic inflammatory disease affecting tooth-supporting tissues. In the present study, we investigated the response of human macrophages to stimulation with a cell wall preparation from P. micros. In addition, the effect of the preparation on the phosphorylation of macrophage kinases was studied. The preparation, which was non-toxic for macrophages, significantly increased the secretion of the pro-inflammatory cytokines TNF-alpha, IL-1beta and IL-6. It also increased the secretion of two potent chemokines IL-8 and, to a lesser extent, RANTES. Lastly, stimulation of macrophages by the P. micros cell wall preparation induced a significant increase in MMP-9 secretion but had no effect on the production of prostaglandin E2. The phosphorylation of macrophage kinases, including cAMP-dependent protein-serine kinase (PKA) catalytic subunit beta, G protein-coupled receptor-serine kinase 2, mitogen-activated protein-serine kinase p38 alpha (p38a MAPK), extracellular regulated protein-serine kinase 2 (ERK2) and Jun N-terminus protein-serine kinases (JNK), increased following stimulation with cell wall. In summary, our study showed that the P. micros cell wall preparation induced intracellular signaling pathways, leading to an increased production of pro-inflammatory cytokines, chemokines and MMP-9 by macrophages.
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Affiliation(s)
- Shin-ichi Tanabe
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada
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43
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Bodet C, Epifano F, Genovese S, Curini M, Grenier D. Effects of 3-(4'-geranyloxy-3'-methoxyphenyl)-2-trans propenoic acid and its ester derivatives on biofilm formation by two oral pathogens, Porphyromonas gingivalis and Streptococcus mutans. Eur J Med Chem 2007; 43:1612-20. [PMID: 18093697 DOI: 10.1016/j.ejmech.2007.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2007] [Revised: 10/10/2007] [Accepted: 11/01/2007] [Indexed: 12/26/2022]
Abstract
The aim of this study was to investigate the effect of 3-(4'-geranyloxy-3'-methoxyphenyl)-2-trans propenoic acid, active principle isolated from Acronychia baueri Schott, and its ester derivatives on biofilm formation by two important oral pathogens, Porphyromonas gingivalis and Streptococcus mutans. The parent acid and conjugates with vanillic acid, 2-hydroxynaphthoquinone and guaiacol caused a significant and reproducible inhibition of P. gingivalis biofilm formation. This effect could be related to the ability of the compounds to inhibit bacterial growth. These compounds also efficiently caused a reduction of biofilm formation by S. mutans, a phenomenon not related to growth inhibition. These data suggest that 3-(4'-geranyloxy-3'-methoxyphenyl)-2-trans propenoic acid and some of its ester derivatives may have a therapeutic/preventive potential for oral infections.
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Affiliation(s)
- Charles Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec G1K 7P4, Canada
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44
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Abstract
Vascular disruption and bleeding during periodontitis likely increase the levels of hemoglobin in gingival crevicular fluid. The aim of this study was to investigate the effect of hemoglobin on the inflammatory responses of human macrophages stimulated with lipopolysaccharides (LPS) isolated from periodontopathogens. The production of interleukin-1 beta (IL-1beta), IL-6, IL-8, and tumor necrosis factor alpha (TNF-alpha) by macrophages following challenges with Porphyromonas gingivalis and Fusobacterium nucleatum LPS in the presence or absence of human hemoglobin was analyzed by ELISA. The effect of hemoglobin on LPS-binding to macrophages was evaluated with (3)H-LPS. Hemoglobin and LPS from periodontopathogens acted in synergy to stimulate the production of high levels of IL-1beta, IL-6, IL-8, and TNF-alpha by macrophages. Hemoglobin also enhanced LPS-binding to macrophages. This study suggests that hemoglobin contributes to increases in the levels of pro-inflammatory mediators in periodontal sites by acting in synergy with LPS from periodontopathogens, thus favoring the progression of periodontitis.
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Affiliation(s)
- C Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada
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45
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Bodet C, Chandad F, Grenier D. Cranberry components inhibit interleukin-6, interleukin-8, and prostaglandin E production by lipopolysaccharide-activated gingival fibroblasts. Eur J Oral Sci 2007; 115:64-70. [PMID: 17305718 DOI: 10.1111/j.1600-0722.2007.00415.x] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Periodontitis is a chronic inflammatory disease that affects the tooth supporting tissues. Gingival fibroblasts are the most abundant cells in periodontal tissues and participate actively in the host inflammatory response to periodontopathogens, which is known to mediate local tissue destruction in periodontitis. The aim of this study was to investigate the effect of a proanthocyanidin-enriched cranberry fraction, prepared from cranberry juice concentrate, on inflammatory mediator production by gingival fibroblasts stimulated by the lipopolysaccharide (LPS) of Aggregatibacter actinomycetemcomitans. Interleukin (IL)-6, IL-8, and prostaglandin E(2) (PGE(2)) production by fibroblasts treated with the cranberry fraction and stimulated by A. actinomycetemcomitans LPS was evaluated by enzyme-linked immunosorbent assay. Changes induced by A. actinomycetemcomitans LPS and the cranberry fraction in the expression and phosphorylation state of fibroblast intracellular signaling proteins were characterized by antibody microarrays. The LPS-induced IL-6, IL-8, and PGE(2) responses of gingival fibroblasts were inhibited by treatment with the cranberry fraction. This fraction was found to inhibit fibroblast intracellular signaling proteins, a phenomenon that may lead to a down-regulation of activating protein-1 activity. Cranberry components also reduced cyclooxygenase 2 expression. This study suggests that cranberry juice contains molecules with interesting properties for the development of new host-modulating therapeutic strategies in the adjunctive treatment of periodontitis.
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Affiliation(s)
- Charles Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada
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46
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Bodet C, Chandad F, Grenier D. Inhibition of host extracellular matrix destructive enzyme production and activity by a high-molecular-weight cranberry fraction. J Periodontal Res 2007; 42:159-68. [PMID: 17305875 DOI: 10.1111/j.1600-0765.2006.00929.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND OBJECTIVE Periodontal diseases are a group of inflammatory disorders that are initiated by specific gram-negative bacteria and lead to connective tissue destruction. Proteolytic enzymes, including matrix metalloproteinases (MMPs) and elastase, produced by resident and inflammatory cells in response to periodontopathogens and their products, play a major role in gingival tissue destruction. The aim of this study was to investigate the effect of a high-molecular-weight fraction prepared from cranberry juice concentrate on MMP-3, MMP-9 and elastase activities, as well as on MMP production by human cells stimulated with lipopolysaccharide of Actinobacillus actinomycetemcomitans. MATERIAL AND METHODS MMP-3 and MMP-9 production by gingival fibroblasts and macrophages treated with the cranberry fraction and then stimulated with lipopolysaccharide was measured by enzyme-linked immunosorbent assay. MMP-3, MMP-9 and elastase activities in the presence of the cranberry fraction were evaluated using colorimetric or fluorogenic substrates. The changes in expression and phosphorylation state of fibroblast intracellular signaling proteins induced by A. actinomycetemcomitans lipopolysaccharide and the cranberry fraction were characterized by antibody microarrays. RESULTS The lipopolysaccharide-induced MMP-3 and MMP-9 responses of fibroblasts and macrophages were inhibited in a dose-dependent manner by the cranberry fraction. This fraction was found to inhibit fibroblast intracellular signaling proteins, a phenomenon that may lead to a down-regulation of activating protein-1 activity. MMP-3, MMP-9 and elastase activities were also efficiently inhibited by the cranberry fraction, even when it was used at low concentrations. CONCLUSION These results suggest that cranberry compounds offer promising perspectives for the development of novel host-modulating strategies for an adjunctive treatment of periodontitis.
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Affiliation(s)
- C Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada
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47
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Bodet C, Chandad F, Grenier D. Potentiel pathogénique de Porphyromonas gingivalis, Treponema denticola et Tannerella forsythia, le complexe bactérien rouge associé à la parodontite. ACTA ACUST UNITED AC 2007; 55:154-62. [PMID: 17049750 DOI: 10.1016/j.patbio.2006.07.045] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2006] [Accepted: 07/28/2006] [Indexed: 11/30/2022]
Abstract
Periodontitis are mixed bacterial infections leading to destruction of tooth-supporting tissues, including periodontal ligament and alveolar bone. Among over 500 bacterial species living in the oral cavity, a bacterial complex named "red complex" and made of Porphyromonas gingivalis, Treponema denticola and Tannerella forsythia has been strongly related to advanced periodontal lesions. While periodontopathogenic bacteria are the primary etiologic factor of periodontitis, tissue destruction essentially results from the host immune response to the bacterial challenge. Members of the red complex are Gram negative anaerobic bacteria expressing numerous virulence factors allowing bacteria to colonize the subgingival sites, to disturb the host defense system, to invade and destroy periodontal tissue as well as to promote the immunodestructive host response. This article reviews current knowledge of the pathogenic mechanisms of bacteria of the red complex leading to tissue and alveolar bone destruction observed during periodontitis.
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Affiliation(s)
- C Bodet
- Groupe de recherche en écologie buccale, faculté de médecine dentaire, université Laval, G1K 7P4 Québec, Québec, Canada
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48
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Bodet C, Andrian E, Tanabe SI, Grenier D. Actinobacillus actinomycetemcomitans lipopolysaccharide regulates matrix metalloproteinase, tissue inhibitors of matrix metalloproteinase, and plasminogen activator production by human gingival fibroblasts: A potential role in connective tissue destructio. J Cell Physiol 2007; 212:189-94. [PMID: 17299802 DOI: 10.1002/jcp.21018] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Fibroblasts, a major constituent of gingival connective tissue, can produce immunoregulatory cytokines and proteolytic enzymes that may contribute to tissue destruction. In this study, we evaluated the production of matrix metalloproteinases (MMPs), tissue inhibitors of MMPs (TIMPs), and plasminogen activators by gingival fibroblasts stimulated with lipopolysaccharides (LPS) produced by periodontopathogens, including Actinobacillus actinomycetemcomitans. In addition, changes in the expression and phosphorylation state of fibroblast intracellular signaling proteins induced by A. actinomycetemcomitans LPS were characterized using antibody microarrays. We showed that A. actinomycetemcomitans LPS induced the production of a 50 kDa plasminogen activator, MMP-2 and, to a lesser extent, MMP-3 by fibroblasts. The stimulation of fibroblasts with A. actinomycetemcomitans LPS also resulted in the overproduction of TIMP-1, but had no effect on the production of TIMP-2. Comparable responses were also obtained with Porphyromonas gingivalis and Fusobacterium nucleatum subsp. nucleatum LPS. The results of the microarray analyses showed that A. actinomycetemcomitans LPS induced changes in the phosphorylation state and expression of gingival fibroblast intracellular signaling proteins. More specifically, they suggested that A. actinomycetemcomitans LPS may induce both Jun N-terminus protein-serine kinases (JNK) and mitogen-activated protein-serine kinase p38 alpha (p38alpha MAPK) pathway activation, leading to increased activator protein-1 (AP-1) and nuclear factor kappa-B (NFkappaB) activities, which in turn can stimulate MMP-2, MMP-3, TIMP-1, and urokinase-type plasminogen activator (uPA) expression. This may contribute to periodontal connective tissue destruction.
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Affiliation(s)
- Charles Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Quebec, Canada
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49
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Labrecque J, Bodet C, Chandad F, Grenier D. Effects of a high-molecular-weight cranberry fraction on growth, biofilm formation and adherence of Porphyromonas gingivalis. J Antimicrob Chemother 2006; 58:439-43. [PMID: 16735419 DOI: 10.1093/jac/dkl220] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Porphyromonas gingivalis is a major aetiological agent of periodontitis, a destructive disease affecting the tooth-supporting tissues. Recent reports have indicated that high-molecular-weight molecules from cranberry juice concentrate can prevent the attachment of human pathogens to host tissues. OBJECTIVES The aim of the present study was to investigate the effect of non-dialysable material (NDM) prepared from cranberry juice concentrate on growth, biofilm formation and adherence properties of P. gingivalis. METHODS The effect of cranberry NDM on biofilm formation was studied using a polystyrene microplate assay and by scanning electron microscopy. The effect of cranberry NDM on the attachment properties of P. gingivalis was evaluated by a microplate assay in which mammalian proteins were immobilized into wells. RESULTS Our results indicated that cranberry NDM is a potent inhibitor of biofilm formation by P. gingivalis. However, it has no effect on growth and viability of bacteria. Cranberry NDM also prevented significantly the attachment of P. gingivalis to surfaces coated with type I collagen, fibrinogen or human serum. CONCLUSIONS Our data suggest that cranberry constituents may have a beneficial effect for the prevention and treatment of periodontitis by reducing the capacity of P. gingivalis to colonize periodontal sites.
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Affiliation(s)
- Julie Labrecque
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval Quebec City, Quebec, Canada, G1K 7P4
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50
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Bodet C, Piché M, Chandad F, Grenier D. Inhibition of periodontopathogen-derived proteolytic enzymes by a high-molecular-weight fraction isolated from cranberry. J Antimicrob Chemother 2006; 57:685-90. [PMID: 16473919 DOI: 10.1093/jac/dkl031] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola are three major aetiological agents of chronic periodontitis. The strong proteolytic activities of these bacteria are critical to their survival since their energy source is obtained from peptides and amino acids derived from proteins. In addition, proteases are important factors contributing to periodontal tissue destruction by a variety of mechanisms, including direct tissue degradation and modulation of host inflammatory responses. OBJECTIVES The aim of this study was to investigate the effect of non-dialysable material (NDM) prepared from cranberry juice concentrate on the proteolytic activities of P. gingivalis, T. forsythia and T. denticola. METHODS The effect of NDM on gingipain and dipeptidyl peptidase IV (DPP IV) activities of P. gingivalis, trypsin-like activity of T. forsythia and chymotrypsin-like activity of T. denticola was evaluated using synthetic chromogenic peptides. In addition, the capacity of P. gingivalis to degrade fluorescein-labelled type I collagen and fluorescein-labelled transferrin in the presence of NDM was evaluated by fluorometry. RESULTS NDM dose-dependently inhibited the proteinases of P. gingivalis, T. forsythia and T. denticola as well as type I collagen and transferrin degradation by P. gingivalis. CONCLUSIONS These results suggest that NDM has the potential to reduce either the proliferation of P. gingivalis, T. forsythia and T. denticola in periodontal pockets or their proteinase-mediated destructive process occurring in periodontitis.
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Affiliation(s)
- Charles Bodet
- Groupe de Recherche en Ecologie Buccale, Faculté de Médecine Dentaire, Université Laval, Quebec City, Canada
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