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Vanneste F, Faure A, Varache M, Menendez-Miranda M, Dyon-Tafani V, Dussurgey S, Errazuriz-Cerda E, La Padula V, Alcouffe P, Carrière M, Gref R, Laurent F, Josse J, Ladavière C. LipoParticles: a lipid membrane coating onto polymer particles to enhance the internalization in osteoblast cells. NANOSCALE 2023; 15:18015-18032. [PMID: 37916389 DOI: 10.1039/d3nr03267a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
LipoParticles, core-shell assemblies consisting of a polymer core coated by a lipid membrane, are promising carriers for drug delivery applications with intracellular targets. This is of great interest since it is actually challenging to treat infections involving intracellular bacteria such as bone and joint infections where the bacteria are hidden in osteoblast cells. The present work reports for the first time to the best of our knowledge the proof of enhanced internalization of particles in osteoblast cells thanks to a lipid coating of particles (= LipoParticles). The ca. 300 nm-sized assemblies were elaborated by reorganization of liposomes (composed of DPPC/DPTAP 10/90 mol/mol) onto the surface of poly(lactic-co-glycolic acid) (PLGA) particles, and were characterized by dynamic light scattering (DLS), transmission electron microscopy (TEM), and zetametry. Optimization of these assemblies was also performed by adding poly(ethylene glycol) (PEG) chains on their surface (corresponding to a final formulation of DPPC/DPTAP/DPPE-PEG5000 8/90/2 mol/mol/mol). Interestingly, this provided them colloidal stability after their 20-fold dilution in PBS or cell culture medium, and made possible their freeze-drying without forming aggregates after their re-hydration. Their non-cytotoxicity towards a human osteoblast cell line (MG63) was also demonstrated. The enhanced internalization of LipoParticles in this MG63 cell line, in comparison with PLGA particles, was proven by observations with a confocal laser scanning microscope, as well as by flow cytometry assays. Finally, this efficient internalization of LipoParticles in MG63 cells was confirmed by TEM on ultrathin sections, which also revealed localization close to intracellular Staphylococcus aureus.
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Affiliation(s)
- Florian Vanneste
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, INSA Lyon, Université Jean Monnet, UMR 5223, Ingénierie des Matériaux Polymères F-69622 Cedex, France.
| | - Allison Faure
- Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France.
| | - Mathieu Varache
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, INSA Lyon, Université Jean Monnet, UMR 5223, Ingénierie des Matériaux Polymères F-69622 Cedex, France.
| | - Mario Menendez-Miranda
- Institut de Sciences Moléculaires d'Orsay (ISMO), Univ. of Paris-Sud, Orsay 91405, France
| | - Virginie Dyon-Tafani
- Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France.
| | - Sébastien Dussurgey
- Structure Fédérative de Recherche Biosciences, UMS344/US8, Inserm, CNRS, Université Claude Bernard Lyon-1, ENS de Lyon, Lyon, France
| | | | - Veronica La Padula
- Centre Technologique des Microstructures, Université Claude Bernard Lyon 1, Villeurbanne, France
| | - Pierre Alcouffe
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, INSA Lyon, Université Jean Monnet, UMR 5223, Ingénierie des Matériaux Polymères F-69622 Cedex, France.
| | - Marie Carrière
- Université Grenoble-Alpes, CEA, CNRS, IRIG, SyMMES, CIBEST, 38000 Grenoble, France
| | - Ruxandra Gref
- Institut de Sciences Moléculaires d'Orsay (ISMO), Univ. of Paris-Sud, Orsay 91405, France
| | - Frédéric Laurent
- Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France.
| | - Jérôme Josse
- Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France.
| | - Catherine Ladavière
- Université de Lyon, CNRS, Université Claude Bernard Lyon 1, INSA Lyon, Université Jean Monnet, UMR 5223, Ingénierie des Matériaux Polymères F-69622 Cedex, France.
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2
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Kramer TS, Soriano A, Tedeschi S, Chen AF, Tattevin P, Senneville E, Gomez-Junyent J, Birlutiu V, Petersdorf S, de Brito VD, Gonzalez IS, Belden KA, Wouthuyzen-Bakker M. Should We Use Rifampicin in Periprosthetic Joint Infections Caused by Staphylococci When the Implant Has Been Exchanged? A Multicenter Observational Cohort Study. Open Forum Infect Dis 2023; 10:ofad491. [PMID: 37901121 PMCID: PMC10604993 DOI: 10.1093/ofid/ofad491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 10/10/2023] [Indexed: 10/31/2023] Open
Abstract
Background Previous studies demonstrated the efficacy of a rifampicin-based regimen in the treatment of acute staphylococcal periprosthetic joint infections (PJIs) treated with surgical debridement. However, evidence is lacking to support the use of rifampicin in cases where the implant is exchanged during revision. Methods We included all consecutive cases of staphylococcal PJIs treated from January 2013 to December 2018 with revision surgery in this international, retrospective, multicenter observational cohort study. PJI was defined according to the European Bone and Joint Infection Society diagnostic criteria. A relapse or reinfection during follow-up, the need for antibiotic suppressive therapy, the need for implant removal, and PJI-related death were defined as clinical failure. Cases without reimplantation or with follow-up <12 months were excluded. Results A total of 375 cases were included in the final analysis, including 124 1-stage exchanges (33.1%) and 251 2-stage exchanges (66.9%). Of those, 101 cases failed (26.9%). There was no statistically significant difference in failure of patients receiving rifampicin (22.5%, 42/187) and those not receiving rifampicin (31.4%, 59/188; P = .051). A subanalysis of chronic PJIs treated by 2-stage exchange arthroplasty demonstrated a lower failure rate in cases treated with rifampicin (15%) compared with the no-rifampicin group (35.5%; P = .005). In this subgroup, the use of rifampicin and an antibiotic holiday of >2 weeks were independent predictors of clinical success (odds ratio [OR], 0.36; 95% CI, 0.15-0.88; and OR, 0.19; 95% CI, 0.04-0.90; respectively). Conclusions Combination treatment with rifampicin increases treatment success in patients with chronic staphylococcal PJI treated with 2-stage exchange arthroplasty.
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Affiliation(s)
- Tobias Siegfried Kramer
- Institute for Hygiene and Environmental Medicine, Charité Universitätsmedizin Berlin, Berlin, Germany
- Clinic for Orthopedic Surgery and Traumatology, Evangelisches Waldkrankenhaus Berlin, Berlin, Deutschland
- LADR der Laborverbund Dr. Kramer & Kollegen, Geesthacht, Germany
| | - Alex Soriano
- Department of Infectious Diseases, University of Barcelona, IDIBAPS, Hospital Clinic of Barcelona, Barcelona, Spain
| | - Sarah Tedeschi
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Infectious Diseases Unit, IRCCS Azienda Ospedaliero-Universistaria di Bologna, Bologna, Italy
| | - Antonia F Chen
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Pierre Tattevin
- Infectious Diseases and Intensive Care Unit, Pontchaillou University Hospital, Rennes, France
| | - Eric Senneville
- French National Referent Centre for Complex Bone and Joint Infections, CRIOAC Lille-Tourcoing, Lille, France
| | - Joan Gomez-Junyent
- Department of Infectious Diseases, Hospital del Mar, Infectious Pathology and Antimicrobial Research Group (IPAR), Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Universitat Autònoma de Barcelona (UAB), CEXS-Universitat Pompeu Fabra, Barcelona, Spain
| | - Victoria Birlutiu
- County Clinical Emergency Hospital of Sibiu, Faculty of Medicine, Lucian Blaga University of Sibiu, Romania
| | - Sabine Petersdorf
- Institute for Medical Laboratory Diagnostics, Helios University Clinic Wuppertal, Wuppertal, Germany
| | - Vicens Diaz de Brito
- Department of Infectious Diseases, Parc Sanitari Sant Joan de Deu, Sant Boi (Barcelona), Spain
| | - Ignacio Sancho Gonzalez
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario de Navarra, Pamplona, España
| | - Katherine A Belden
- Division of Infectious Diseases, Sidney Kimmel Medical College at Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Marjan Wouthuyzen-Bakker
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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3
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Aldarhami A, Bazaid AS, Qanash H, Ahmad I, Alshammari FH, Alshammari AM, Alshammari AH, Aljanfawe FM, Aldamiri B, Aldawood E, Alghamdi MA, Binsaleh NK, Saeedi NH, Snoussi M. Effects of Repeated in-vitro Exposure to Saudi Honey on Bacterial Resistance to Antibiotics and Biofilm Formation. Infect Drug Resist 2023; 16:4273-4283. [PMID: 37424668 PMCID: PMC10327913 DOI: 10.2147/idr.s410159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 06/28/2023] [Indexed: 07/11/2023] Open
Abstract
Introduction Although Sumra and Sidr Saudi honey is widely used in traditional medicine due to its potent activity, it is unknown whether its prolonged usage has impact upon bacterial virulence or leading to reduced antibiotic sensitivity. Thus, the study aims to investigate the effect of prolonged (repeated) in-vitro exposure to Saudi honey on the antibiotic susceptibility profiles and biofilm formation of pathogenic bacteria. Methods Several bacteria, including Staphylococcus aureus, Escherichia coli, and Acinetobacter baumannii, were in-vitro exposed ten times [passaged (P10)]to Sumra and Sider honey individually to introduce adapted bacteria (P10). Antibiotic susceptibility profiles of untreated (P0) and adapted (P10) bacteria were assessed using disc diffusion and microdilution assays. The tendency regarding biofilm formation following in-vitro exposure to honey (P10) was assessed using the Crystal violet staining method. Results Adapted (P10) bacteria to both Sumra and Sidr honey showed an increased sensitivity to gentamicin, ceftazidime, ampicillin, amoxycillin/clavulanic acid, and ceftriaxone, when compared with the parent strains (P0). In addition, A. baumannii (P10) that was adapted to Sidr honey displayed a 4-fold increase in the minimal inhibitory concentration of the same honey following in-vitro exposure. 3-fold reduction in the tendency toward biofilm formation was observed for the Sumra-adapted (P10) methicillin resistant S. aureus strain, although there was a lower rate of reduction (1.5-fold) in biofilm formation by both the Sumra- and Sidr-adapted A. baumannii (P10) strains. Conclusion The data highlight the positive impact of prolonged in-vitro exposure to Saudi honey (Sumra and Sider) for wound-associated bacteria since they displayed a significant increase in their sensitivity profiles to the tested antibiotic and a reduction in their ability to form biofilm. The increased bacterial sensitivity to antibiotics and a limited tendency toward biofilm formation would suggest the great potential therapeutic use of this Saudi honey (Sumra and Sidr) to treat wound infections.
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Affiliation(s)
- Abdu Aldarhami
- Department of Medical Microbiology, Qunfudah Faculty of Medicine, Umm Al-Qura University, Al-Qunfudah, 21961, Saudi Arabia
| | - Abdulrahman S Bazaid
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Ha’il, Hail, 55476, Saudi Arabia
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
| | - Husam Qanash
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Ha’il, Hail, 55476, Saudi Arabia
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
| | - Iqbal Ahmad
- Department of Agricultural Microbiology, Faculty of Agricultural Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Fahad H Alshammari
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Ha’il, Hail, 55476, Saudi Arabia
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
| | - Abdulrahman M Alshammari
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Ha’il, Hail, 55476, Saudi Arabia
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
| | - Abdulrahman H Alshammari
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Ha’il, Hail, 55476, Saudi Arabia
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
| | - Fahad M Aljanfawe
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
| | - Bushra Aldamiri
- Biochemistry Department, College of Science, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Esraa Aldawood
- Clinical Laboratory Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, 12372, Saudi Arabia
| | - Mashail A Alghamdi
- Biology Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
| | - Naif K Binsaleh
- Department of Medical Laboratory Science, College of Applied Medical Sciences, University of Ha’il, Hail, 55476, Saudi Arabia
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
| | - Nizar H Saeedi
- Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, University of Tabuk, Tabuk, Saudi Arabia
| | - Mejdi Snoussi
- Medical and Diagnostic Research Center, University of Ha’il, Hail, 55473, Saudi Arabia
- Department of Biology, College of Science, University of Ha’il, Hail, 81451, Saudi Arabia
- Laboratory of Genetics, Biodiversity and Valorization of Bio-Resources, Higher Institute of Biotechnology of Monastir, University of Monastir, Monastir, 5000, Tunisia
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Wouthuyzen-Bakker M, Scheper H. Rifampicin in periprosthetic joint infections: where do we stand and where are we headed? Expert Rev Anti Infect Ther 2023:1-7. [PMID: 37141111 DOI: 10.1080/14787210.2023.2211263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
INTRODUCTION A periprosthetic joint infection (PJI) is a major complication of arthroplasty. Treatment of PJI consists of surgical debridement with or without the exchange of the implant and long-term antimicrobial treatment. Rifampicin is regarded as one of the cornerstones of antimicrobial treatment for staphylococcal PJI, but the exact role of rifampicin for PJI in different clinical scenarios remains to be elucidated. AREAS COVERED In this perspective article, an overview is provided of in vitro, in vivo and clinical studies that were the basis of the current guidelines and recommendations for rifampicin use in daily practice for PJI. Controversial issues on indication, dosing, timing, duration and antibiotic drug interactions will be addressed. Finally, the most urgent clinical questions on rifampicin use that need answering in the nearby future will be formulated. EXPERT OPINION Many inquiries remain concerning the exact indications and clinical use of rifampicin in PJI. Randomized controlled trials are needed to answer these questions.
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Affiliation(s)
- Marjan Wouthuyzen-Bakker
- Department of medical microbiology and infection prevention, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Henk Scheper
- Department of infectious diseases, Leiden University Medical Center, University of Leiden, Leiden, The Netherlands
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5
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Sabater-Martos M, Verdejo MA, Morata L, Muñoz-Mahamud E, Guerra-Farfan E, Martinez-Pastor JC, Soriano A. Antimicrobials in polymethylmethacrylate: from prevention to prosthetic joint infection treatment: basic principles and risk of resistance. ARTHROPLASTY 2023; 5:12. [PMID: 36864538 PMCID: PMC9983184 DOI: 10.1186/s42836-023-00166-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 01/16/2023] [Indexed: 03/04/2023] Open
Abstract
BACKGROUND Excellent revisions about antibiotic-loaded bone cement (ALBC) have been recently published. In the present article, we review the principles and limitations of local antibiotic delivery in the context of recent advances in the pathogenesis of prosthetic joint infections (PJI), with particular attention paid to the potential association between ALBC and antimicrobial resistance. MAIN BODY Recalcitrance of PJI is related to the ability of pathogens to adapt to particular environments present in bone tissue and protect themselves from host immunity in different ways. Accordingly, delivery of high local antimicrobial concentrations using ALBC is needed. Most relevant clinical data showing the efficacy of ALBC for PJI prophylaxis and treatment are reviewed, and we dissected the limitations on the basis of the recent findings from animal models and suggested that aminoglycosides, in particular, could not be the best option. One of the major concerns associated with ALBC is the emergence of resistance because of theoretical prolonged exposure to low antibiotic concentrations. We summarize the mechanisms for the selection of resistant microorganisms, and we critically reviewed the evidence from animal models and clinical data from observational and registry studies and concluded that there is no evidence to support this association. CONCLUSION While waiting for better evidence from well-designed clinical trials, ALBC shows a beneficial effect as a prophylaxis in arthroplasty, and to avoid the colonization of spacers used for two-stage revision in patients with PJI. Experimental models and clinical evidence suggest the need to achieve high local antimicrobial concentrations to obtain the highest prophylactic and therapeutic effect. The current evidence does not support the risk of increasing resistance with use of ALBC. In the future, it is necessary to evaluate new carriers and different antimicrobials to improve clinical outcomes.
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Affiliation(s)
- Marta Sabater-Martos
- Department of Orthopedics and Traumatology, Hospital Clínic of Barcelona, Carrer Villarroel 170, 08036, Barcelona, Spain.
| | - Miguel A. Verdejo
- grid.410458.c0000 0000 9635 9413Department of Infectious Diseases, Hospital Clínic of Barcelona, Carrer Villarroel 170, 08036 Barcelona, Spain
| | - Laura Morata
- grid.410458.c0000 0000 9635 9413Department of Infectious Diseases, Hospital Clínic of Barcelona, Carrer Villarroel 170, 08036 Barcelona, Spain
| | - Ernesto Muñoz-Mahamud
- grid.410458.c0000 0000 9635 9413Department of Orthopedics and Traumatology, Hospital Clínic of Barcelona, Carrer Villarroel 170, 08036 Barcelona, Spain
| | - Ernesto Guerra-Farfan
- grid.411083.f0000 0001 0675 8654Department of Orthopedics and Traumatology, Hospital Vall d’Hebron of Barcelona, Passeig de la Vall d’Hebron 119, 08035 Barcelona, Spain
| | - Juan C. Martinez-Pastor
- grid.410458.c0000 0000 9635 9413Department of Orthopedics and Traumatology, Hospital Clínic of Barcelona, Carrer Villarroel 170, 08036 Barcelona, Spain
| | - Alex Soriano
- Department of Infectious Diseases, Hospital Clínic of Barcelona, Carrer Villarroel 170, 08036, Barcelona, Spain. .,University of Barcelona, CIBERINF, Carrer Casanova 143, 08036, Barcelona, Spain.
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6
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Brizzi M, Pérez SE, Michienzi SM, Badowski ME. Long-acting injectable antiretroviral therapy: will it change the future of HIV treatment? Ther Adv Infect Dis 2023; 10:20499361221149773. [PMID: 36741193 PMCID: PMC9893397 DOI: 10.1177/20499361221149773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 12/12/2022] [Indexed: 02/03/2023] Open
Abstract
The treatment of human immunodeficiency virus (HIV) has greatly advanced over the past few decades from complex regimens, with high toxicities, multiple daily dosing, and incomplete viral suppression to more simplified, highly effective, daily oral regimens. Although these advancements greatly improved access and tolerability, the need for daily antiretroviral (ARV) administration remained until recently. With long-acting (LA) injectable ARV options emerging, patients may choose how they want to receive treatment. By eliminating the barrier of daily medication adherence, LA injectable ARV formulations have the potential to not only improve health outcomes for the individual, but also the community by reducing HIV transmission. At the time of this writing cabotegravir/rilpivirine (LA-CAB/RPV) is the only LA injectable ARV regimen approved as a complete regimen for the treatment of HIV in adults and adolescents (⩾35 kg and ⩾12 years of age) who are virologically suppressed. However, additional studies of LA-CAB/RPV in expanded populations, and of other LA ARVs, are underway. The goal of this article was to summarize clinical data and review pertinent clinical considerations for the use of LA-CAB/RPV in the management of HIV.
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Affiliation(s)
- Marisa Brizzi
- University of Cincinnati Health, Cincinnati,
OH, USA
| | - Sarah E. Pérez
- Ruth M. Rothstein CORE Center, Cook County
Health, Chicago, IL, USA
| | - Sarah M. Michienzi
- Department of Pharmacy Practice and Infectious
Diseases Pharmacotherapy Section, College of Pharmacy, University of
Illinois Chicago, Chicago, IL, USA
| | - Melissa E. Badowski
- Department of Pharmacy Practice and Infectious
Diseases Pharmacotherapy Section, College of Pharmacy, University of
Illinois Chicago, Chicago 60607, IL, USA
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Rodrigues Lopes I, Alcantara LM, Silva RJ, Josse J, Vega EP, Cabrerizo AM, Bonhomme M, Lopez D, Laurent F, Vandenesch F, Mano M, Eulalio A. Microscopy-based phenotypic profiling of infection by Staphylococcus aureus clinical isolates reveals intracellular lifestyle as a prevalent feature. Nat Commun 2022; 13:7174. [PMID: 36418309 PMCID: PMC9684519 DOI: 10.1038/s41467-022-34790-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 11/08/2022] [Indexed: 11/24/2022] Open
Abstract
Staphylococcus aureus is increasingly recognized as a facultative intracellular pathogen, although the significance and pervasiveness of its intracellular lifestyle remain controversial. Here, we applied fluorescence microscopy-based infection assays and automated image analysis to profile the interaction of 191 S. aureus isolates from patients with bone/joint infections, bacteremia, and infective endocarditis, with four host cell types, at five times post-infection. This multiparametric analysis revealed that almost all isolates are internalized and that a large fraction replicate and persist within host cells, presenting distinct infection profiles in non-professional vs. professional phagocytes. Phenotypic clustering highlighted interesting sub-groups, including one comprising isolates exhibiting high intracellular replication and inducing delayed host death in vitro and in vivo. These isolates are deficient for the cysteine protease staphopain A. This study establishes S. aureus intracellular lifestyle as a prevalent feature of infection, with potential implications for the effective treatment of staphylococcal infections.
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Affiliation(s)
- Ines Rodrigues Lopes
- grid.8051.c0000 0000 9511 4342RNA & Infection Laboratory, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal ,grid.8051.c0000 0000 9511 4342Functional Genomics and RNA-based Therapeutics Laboratory, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Laura Maria Alcantara
- grid.8051.c0000 0000 9511 4342RNA & Infection Laboratory, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Ricardo Jorge Silva
- grid.8051.c0000 0000 9511 4342Functional Genomics and RNA-based Therapeutics Laboratory, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Jerome Josse
- grid.15140.310000 0001 2175 9188Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Elena Pedrero Vega
- grid.4711.30000 0001 2183 4846National Centre for Biotechnology, Spanish National Research Council (CNB-CSIC), Madrid, Spain
| | - Ana Marina Cabrerizo
- grid.4711.30000 0001 2183 4846National Centre for Biotechnology, Spanish National Research Council (CNB-CSIC), Madrid, Spain
| | - Melanie Bonhomme
- grid.15140.310000 0001 2175 9188Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France
| | - Daniel Lopez
- grid.4711.30000 0001 2183 4846National Centre for Biotechnology, Spanish National Research Council (CNB-CSIC), Madrid, Spain
| | - Frederic Laurent
- grid.15140.310000 0001 2175 9188Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France ,grid.413852.90000 0001 2163 3825Centre National de Référence des Staphylocoques, Institut des Agents Infectieux, Hospices Civils de Lyon, Lyon, France
| | - Francois Vandenesch
- grid.15140.310000 0001 2175 9188Centre International de Recherche en Infectiologie (CIRI), Université de Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, Lyon, France ,grid.413852.90000 0001 2163 3825Centre National de Référence des Staphylocoques, Institut des Agents Infectieux, Hospices Civils de Lyon, Lyon, France
| | - Miguel Mano
- grid.8051.c0000 0000 9511 4342Functional Genomics and RNA-based Therapeutics Laboratory, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal ,grid.8051.c0000 0000 9511 4342Department of Life Sciences, University of Coimbra, Coimbra, Portugal ,grid.13097.3c0000 0001 2322 6764British Heart Foundation Centre of Research Excellence, School of Cardiovascular and Metabolic Medicine & Sciences, King’s College London, London, United Kingdom
| | - Ana Eulalio
- grid.8051.c0000 0000 9511 4342RNA & Infection Laboratory, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal ,grid.7311.40000000123236065Institute of Biomedicine (iBiMED), Department of Medical Sciences, University of Aveiro, Aveiro, Portugal ,grid.7445.20000 0001 2113 8111Department of Life Sciences, Imperial College London, London, United Kingdom
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8
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Garcia-Moreno M, Jordan PM, Günther K, Dau T, Fritzsch C, Vermes M, Schoppa A, Ignatius A, Wildemann B, Werz O, Löffler B, Tuchscherr L. Osteocytes Serve as a Reservoir for Intracellular Persisting Staphylococcus aureus Due to the Lack of Defense Mechanisms. Front Microbiol 2022; 13:937466. [PMID: 35935196 PMCID: PMC9355688 DOI: 10.3389/fmicb.2022.937466] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 06/20/2022] [Indexed: 11/24/2022] Open
Abstract
Chronic staphylococcal osteomyelitis can persist for long time periods causing bone destruction. The ability of Staphylococcus aureus to develop chronic infections is linked to its capacity to invade and replicate within osteoblasts and osteocytes and to switch to a dormant phenotype called small colony variants. Recently, osteocytes were described as a main reservoir for this pathogen in bone tissue. However, the mechanisms involved in the persistence of S. aureus within these cells are still unknown. Here, we investigated the interaction between S. aureus and osteoblasts or osteocytes during infection. While osteoblasts are able to induce a strong antimicrobial response and eliminate intracellular S. aureus, osteocytes trigger signals to recruit immune cells and enhance inflammation but fail an efficient antimicrobial activity to clear the bacterial infection. Moreover, we found that extracellular signals from osteocytes enhance intracellular bacterial clearance by osteoblasts. Even though both cell types express Toll-like receptor (TLR) 2, the main TLR responsible for S. aureus detection, only osteoblasts were able to increase TLR2 expression after infection. Additionally, proteomic analysis indicates that reduced intracellular bacterial killing activity in osteocytes is related to low antimicrobial peptide expression. Nevertheless, high levels of lipid mediators and cytokines were secreted by osteocytes, suggesting that they can contribute to inflammation. Taken together, our results demonstrate that osteocytes contribute to severe inflammation observed in osteomyelitis and represent the main niche for S. aureus persistence due to their poor capacity for intracellular antimicrobial response.
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Affiliation(s)
| | - Paul M. Jordan
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Kerstin Günther
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Therese Dau
- Leibniz Institute on Aging, Fritz Lipmann Institute, Jena, Germany
| | - Christian Fritzsch
- Institute of Medical Microbiology, Jena University Hospital, Jena, Germany
| | - Monika Vermes
- Institute of Medical Microbiology, Jena University Hospital, Jena, Germany
| | - Astrid Schoppa
- Institute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany
| | - Anita Ignatius
- Institute of Orthopaedic Research and Biomechanics, University Medical Center Ulm, Ulm, Germany
| | - Britt Wildemann
- Experimental Trauma Surgery, Department of Trauma, Hand and Reconstructive Surgery, Jena University Hospital, Friedrich Schiller University Jena, Jena, Germany
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, Jena, Germany
| | - Bettina Löffler
- Institute of Medical Microbiology, Jena University Hospital, Jena, Germany
| | - Lorena Tuchscherr
- Institute of Medical Microbiology, Jena University Hospital, Jena, Germany
- *Correspondence: Lorena Tuchscherr,
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Onorini D, Borel N, Schoborg RV, Leonard CA. Neisseria gonorrhoeae Limits Chlamydia trachomatis Inclusion Development and Infectivity in a Novel In Vitro Co-Infection Model. Front Cell Infect Microbiol 2022; 12:911818. [PMID: 35873141 PMCID: PMC9300984 DOI: 10.3389/fcimb.2022.911818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 06/14/2022] [Indexed: 11/13/2022] Open
Abstract
Chlamydia trachomatis (Ct) and Neisseria gonorrhoeae (Ng) are the most common bacterial sexually transmitted infections (STIs) worldwide. The primary site of infection for both bacteria is the epithelium of the endocervix in women and the urethra in men; both can also infect the rectum, pharynx and conjunctiva. Ct/Ng co-infections are more common than expected by chance, suggesting Ct/Ng interactions increase susceptibility and/or transmissibility. To date, studies have largely focused on each pathogen individually and models exploring co-infection are limited. We aimed to determine if Ng co-infection influences chlamydial infection and development and we hypothesized that Ng-infected cells are more susceptible to chlamydial infection than uninfected cells. To address this hypothesis, we established an in vitro model of Ct/Ng co-infection in cultured human cervical epithelial cells. Our data show that Ng co-infection elicits an anti-chlamydial effect by reducing chlamydial infection, inclusion size, and subsequent infectivity. Notably, the anti-chlamydial effect is dependent on Ng viability but not extracellular nutrient depletion or pH modulation. Though this finding is not consistent with our hypothesis, it provides evidence that interaction of these bacteria in vitro influences chlamydial infection and development. This Ct/Ng co-infection model, established in an epithelial cell line, will facilitate further exploration into the pathogenic interplay between Ct and Ng.
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Affiliation(s)
- Delia Onorini
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Nicole Borel
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Robert V. Schoborg
- Department of Medical Education, Center for Infectious Disease, Inflammation and Immunity, Quillen College of Medicine, East Tennessee State University, Johnson City, TN, United States
| | - Cory Ann Leonard
- Institute of Veterinary Pathology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
- *Correspondence: Cory Ann Leonard,
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