1
|
Lacasse M, Derolez S, Bonnet E, Amelot A, Bouyer B, Carlier R, Coiffier G, Cottier JP, Dinh A, Maldonado I, Paycha F, Ziza JM, Bemer P, Bernard L. 2022 SPILF - Clinical Practice guidelines for the diagnosis and treatment of disco-vertebral infection in adults. Infect Dis Now 2023; 53:104647. [PMID: 36690329 DOI: 10.1016/j.idnow.2023.01.007] [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: 12/08/2022] [Revised: 12/12/2022] [Accepted: 01/10/2023] [Indexed: 01/22/2023]
Abstract
These guidelines are an update of those made in 2007 at the request of the French Society of Infectious Diseases (SPILF, Société de Pathologie Infectieuse de Langue Française). They are intended for use by all healthcare professionals caring for patients with disco-vertebral infection (DVI) on spine, whether native or instrumented. They include evidence and opinion-based recommendations for the diagnosis and management of patients with DVI. ESR, PCT and scintigraphy, antibiotic therapy without microorganism identification (except for emergency situations), therapy longer than 6 weeks if the DVI is not complicated, contraindication for spinal osteosynthesis in a septic context, and prolonged dorsal decubitus are no longer to be done in DVI management. MRI study must include exploration of the entire spine with at least 2 orthogonal planes for the affected level(s). Several disco-vertebral samples must be performed if blood cultures are negative. Short, adapted treatment and directly oral antibiotherapy or early switch from intravenous to oral antibiotherapy are recommended. Consultation of a spine specialist should be requested to evaluate spinal stability. Early lifting of patients is recommended.
Collapse
Affiliation(s)
- M Lacasse
- Medecine Interne et Maladies Infectieuses, 2 Bd Tonnelé, CHU Bretonneau, 37044 Tours Cedex 09, France
| | - S Derolez
- Rhumatologie, 125 rue de Stalingrad, CHU Avicenne, 93000 Bobigny, France
| | - E Bonnet
- Maladies Infectieuses, Pl. Dr Baylac, CHU Purpan, 31000 Toulouse, France.
| | - A Amelot
- Neurochirurgie, 2 Bd Tonnelé, CHU Bretonneau, 37044 Tours Cedex 09, France
| | - B Bouyer
- Chirurgie orthopédique et traumatologique, CHU de Bordeaux, Place Amélie Raba-léon, 33076 Bordeaux, France
| | - R Carlier
- Imagerie, Hôpital Raymond Poincaré, 104 Bd R Poincaré, 92380 Garches, France
| | - G Coiffier
- Rhumatologie, GH Rance-Emeraude, Hôpital de Dinan, 22100 Dinan, France
| | - J P Cottier
- Radiologie, 2 Bd Tonnelé, CHU Bretonneau, 37044 Tours Cedex 09, France
| | - A Dinh
- Maladies Infecteiuses, CHU Raymond Poicaré, 92380 Garches, France
| | - I Maldonado
- Radiologie, 2 Bd Tonnelé, CHU Bretonneau, 37044 Tours Cedex 09, France
| | - F Paycha
- Médecine Nucléaire, Hôpital Lariboisière, 2 rue Ambroise Paré 75010 Paris, France
| | - J M Ziza
- Rhumatologie et Médecine Interne. GH Diaconesses Croix Saint Simon, 75020 Paris, France
| | - P Bemer
- Microbiologie, CHU de Nantes, 1 Place A. Ricordeau, Nantes 44000 Cedex 1, France
| | - L Bernard
- Medecine Interne et Maladies Infectieuses, 2 Bd Tonnelé, CHU Bretonneau, 37044 Tours Cedex 09, France
| |
Collapse
|
2
|
Lacasse M, Valentin AS, Corvec S, Bémer P, Jolivet-Gougeon A, Plouzeau C, Tandé D, Mereghetti L, Bernard L, Lartigue MF. Genotypic Characterization and Biofilm Production of Group B Streptococcus Strains Isolated from Bone and Joint Infections. Microbiol Spectr 2022; 10:e0232921. [PMID: 35357222 PMCID: PMC9045227 DOI: 10.1128/spectrum.02329-21] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 02/07/2022] [Indexed: 11/20/2022] Open
Abstract
Bone and joint infections (BJI) represent the second cause of invasive Group B Streptococcus (GBS) infections. Biofilm formation plays a major role in BJI. This study's aim was to analyze the genetic features and biofilm production of GBS strains. In six French laboratories, 77 GBS strains isolated from BJI and 57 strains from vaginal human colonization (Hcol) were characterized and compared by Multi-Locus Sequence Typing (MLST). PCR was used to search for the adhesins (bsaB, lmb, scpB, fbsA, fbsB, hvgA, bibA, bca, srr-1, and srr-2) and Pilus Islands (PI) related genes (PI-1, PI-2a, PI-2b). Biofilm production was studied by crystal violet assay. Strains were categorized into three groups, based on Specific Biofilm Formation (SBF) values defined as: weak, moderate, or strong producers. Molecular study revealed three major clonal complexes (CC) in BJI strains: CC1 (42%), CC23 (22%) and CC10 (14%). Several associations between CC and adhesin/pili were identified: CC1 with srr2, PI-1 + 2a; CC10 with srr-1, bca, PI-1 + 2a; CC17 with fbsB, hvgA, srr-2, PI-1+PI-2b; CC19 with bibA, srr-1, PI-1 + 2a; CC23 with fbsB, bibA, srr-1, PI-2a. The biofilm production was significantly different according to CC, adhesins and pili gene detection. CC10, CC23 and strains harboring fbsB produce more biofilm than CC1, PI-1 + 2a (independently). Finally, SBF values were significantly stronger for Hcol strains rather than for BJI strains (76% versus 40%). This study revealed that Hcol strains appeared to produce stronger biofilm than BJI strains, though they belonged to similar CCs and had the same adhesin and pili content. IMPORTANCE Bone and joint infections (BJI) are pathologies that can be life-threatening and result in compromised functional prognosis for patients. Relapses are common and often related to biofilm formation. Group B streptococci (GBS) BJI increased since the last decade. However, few data are available on this subject in the literature. Our study aims to highlight genotype and biofilm production of GBS isolates from BJI. Seventy-seven GBS strains isolated from BJI and 57 from asymptomatic human vaginal colonization were characterized by multilocus sequence typing (MLST), adhesins content, nature of the pili and the ability to form biofilm. Our results revealed that vaginal human colonization strains produced stronger biofilm than BJI strains, despite belonging to the same phylogenetic lineage and having the same adhesin and pili content.
Collapse
Affiliation(s)
| | - Anne-Sophie Valentin
- Université de Tours, INRAE, ISP, Tours, France
- Centre Hospitalier Universitaire de Tours, Service de Bactériologie, Virologie et Hygiène Hospitalière, Tours, France
| | - Stéphane Corvec
- University Hospital Center of Nantes, Bacteriology Department, Nantes University, Nantes, France
| | - Pascale Bémer
- University Hospital Center of Nantes, Bacteriology Department, Nantes University, Nantes, France
| | - Anne Jolivet-Gougeon
- University of Rennes, INSERM, University Hospital of Rennes, NUMECAN Institute (Nutrition Metabolisms and Cancer), Rennes, France
| | - Chloé Plouzeau
- Bacteriology-Hospital Hygiene Department, University Hospital of Poitiers, Poitiers University, Poitiers, France
| | - Didier Tandé
- Bacteriology-Hospital Hygiene Department, University Hospital of Brest, Brest University, Brest, France
| | - Laurent Mereghetti
- Université de Tours, INRAE, ISP, Tours, France
- Centre Hospitalier Universitaire de Tours, Service de Bactériologie, Virologie et Hygiène Hospitalière, Tours, France
| | - Louis Bernard
- Centre Hospitalier Universitaire de Tours, Service de Maladies infectieuses, Tours, France
| | - Marie-Frédérique Lartigue
- Université de Tours, INRAE, ISP, Tours, France
- Centre Hospitalier Universitaire de Tours, Service de Bactériologie, Virologie et Hygiène Hospitalière, Tours, France
| |
Collapse
|
3
|
Maisons V, Desoubeaux G, Coustillères F, Lemaignen A, Chesnay A, Doman M, Lanternier F, Bernard L, Lacasse M. Intricate isavuconazole therapy of a subcutaneous nodule caused by Alternaria infectoria in a heart transplant recipient. J Mycol Med 2021; 32:101235. [PMID: 34954620 DOI: 10.1016/j.mycmed.2021.101235] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 12/11/2021] [Accepted: 12/14/2021] [Indexed: 01/09/2023]
Abstract
Invasive fungal infections have appeared to be increasingly emergent in immunocompromised patients, especially in solid organ transplant (SOT) recipients. The Alternaria genus encompasses more than 80 dematiaceus species. Among them, Alternaria alternata and Alternaria infectoria are the most frequent isolated as responsible for infection in humans. To our knowledge, we report the first case of a heart transplant recipient suffering from subcutaneous nodule caused by Alternaria infectoria and who was treated with isavuconazole. Despite all the promises of this new azole drug, one should keep in mind the potential great variability of the inter-individual responses for such complex patients. We demonstrate herein how it can be challenging to manage Alternaria infection in SOT recipients. More comprehensive studies and recommendations are expected in the context of Alternaria infections.
Collapse
Affiliation(s)
- Valentin Maisons
- Service de Néphrologie et d'Immunologie Clinique, CHU Bretonneau, CHRU Tours, France.
| | - Guillaume Desoubeaux
- Service de Parasitologie-Mycologie-Médecine tropicale, CHRU Tours, Tours, France
| | | | - Adrien Lemaignen
- Service de Médecine Interne - Maladies Infectieuses, CHRU Tours, Tours, France
| | - Adelaïde Chesnay
- Service de Parasitologie-Mycologie-Médecine tropicale, CHRU Tours, Tours, France
| | - Marc Doman
- Service de Maladies Infectieuses et Tropicales, Centre d'Infectiologie Necker Pasteur, APHP, Paris, France
| | - Fanny Lanternier
- Service de Maladies Infectieuses et Tropicales, Centre d'Infectiologie Necker Pasteur, APHP, Paris, France
| | - Louis Bernard
- Service de Médecine Interne - Maladies Infectieuses, CHRU Tours, Tours, France
| | - Marion Lacasse
- Service de Médecine Interne - Maladies Infectieuses, CHRU Tours, Tours, France
| |
Collapse
|
4
|
Conan Y, Laurent E, Belin Y, Lacasse M, Amelot A, Mulleman D, Rosset P, Bernard L, Grammatico-Guillon L. Large increase of vertebral osteomyelitis in France: a 2010-2019 cross-sectional study. Epidemiol Infect 2021; 149:e227. [PMID: 34612186 PMCID: PMC8569834 DOI: 10.1017/s0950268821002181] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [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: 04/09/2021] [Revised: 08/13/2021] [Accepted: 09/28/2021] [Indexed: 12/17/2022] Open
Abstract
Vertebral osteomyelitis (VO) represents 4-10% of bone and joint infections. In Western countries, its incidence seems to increase, simultaneously with an increasing number of comorbidities among an ageing population. This study aimed to assess the evolution of VO epidemiology in France over the 2010-2019 decade. A nationwide cross-sectional study was conducted using the French hospital discharge data collected through the French diagnosis-related groups 'Programme de Médicalisation des Systèmes d'Information'. VOs were detected with a previously validated case definition using International Classification of Diseases 10 (ICD-10) codes, implemented with the French current procedural terminology codes. The study population included all patients hospitalised in France during the 2010-2019 decade, aged 15 years old and more. Patient and hospital stay characteristics and their evolutions were described. During the study period, 42 105 patients were hospitalised for VO in France involving 60 878 hospital stays. The mean VO incidence was 7.8/100 000 over the study period, increasing from 6.1/100 000 in 2010 to 11.3/100 000 in 2019. The mean age was 64.8 years old and the sex ratio was 1.56. There were 31 341 (74.4%) patients with at least one comorbidity and 3059 (7.3%) deceased during their hospital stay. Even if rare, device-associated VOs (4450 hospital stays, 7.3%) highly increased over the period. The reliability of the method, based upon an exhaustive database and a validated case definition, provided an effective tool to compare data over time in real-life conditions to regularly update the epidemiology of VO.
Collapse
Affiliation(s)
- Yoann Conan
- Department of Public Health, Unit of Clinical Epidemiology (EpiDcliC), Teaching Hospital of Tours, Tours, France
- Department of Infectious Diseases, Teaching Hospital of Tours, Tours, France
- Medical School, University of Tours, Tours, France
| | - Emeline Laurent
- Department of Public Health, Unit of Clinical Epidemiology (EpiDcliC), Teaching Hospital of Tours, Tours, France
- Research Unit EA7505 (Education Ethique et Santé), University of Tours, Tours, France
| | - Yannick Belin
- Department of Public Health, Unit of Clinical Epidemiology (EpiDcliC), Teaching Hospital of Tours, Tours, France
- Medical School, University of Tours, Tours, France
| | - Marion Lacasse
- Department of Infectious Diseases, Teaching Hospital of Tours, Tours, France
- Medical School, University of Tours, Tours, France
| | - Aymeric Amelot
- Department of Neurosurgery, Teaching Hospital of Tours, Tours, France
| | - Denis Mulleman
- Medical School, University of Tours, Tours, France
- Department of Rheumatology, Teaching Hospital of Tours, Tours, France
- Reference Centre for Complex Bone and Joint Infections of Western France (CRIOGO), Tours, France
| | - Philippe Rosset
- Medical School, University of Tours, Tours, France
- Department of Orthopaedic Surgery, Teaching Hospital of Tours, Tours, France
- Reference Centre for Complex Bone and Joint Infections of Western France (CRIOGO), Tours, France
| | - Louis Bernard
- Department of Infectious Diseases, Teaching Hospital of Tours, Tours, France
- Medical School, University of Tours, Tours, France
- Reference Centre for Complex Bone and Joint Infections of Western France (CRIOGO), Tours, France
| | - Leslie Grammatico-Guillon
- Department of Public Health, Unit of Clinical Epidemiology (EpiDcliC), Teaching Hospital of Tours, Tours, France
- Medical School, University of Tours, Tours, France
| |
Collapse
|
5
|
Conan Y, Laurent E, Belin Y, Lacasse M, Amelot A, Mulleman D, Rosset P, Bernard L, Grammatico-Guillon L. Augmentation substantielle des spondylodiscites en France sur une décennie : une étude à partir du PMSI. Infect Dis Now 2021. [DOI: 10.1016/j.idnow.2021.06.193] [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: 10/20/2022]
|
6
|
Lacasse M, Inyambo K, Lemaignen A, Mennecart M, Gensburger S, Valentin AS, Bernard L, Fougère B. Erysipelas of the right arm due to Bordetella trematum: a case report. J Med Case Rep 2021; 15:365. [PMID: 34253232 PMCID: PMC8276433 DOI: 10.1186/s13256-021-02896-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 01/16/2020] [Accepted: 05/10/2021] [Indexed: 11/29/2022] Open
Abstract
Background Bordetella trematum is unknown to most clinicians and microbiologists. However, this Gram-negative opportunistic bacterium can be responsible for ulcer superinfection but also bacteremia and sometimes death by septic shock. Case report We report the case of erysipelas due to B. trematum with bacteremia in an immunocompromised 88-year-old Caucasian patient. Conclusion In immunocompromised patients, unusual microbial agents such as B. trematum can be responsible for cutaneous and systemic infections, requiring specific antibiotic therapy. Therefore, clinicians should be aware of the need for specific bacterial identification such as matrix-assisted laser desorption ionization time-of-flight mass spectrometry and 16S ribosomal RNA sequencing in the context of atypical evolution of erysipelas in such patients. Supplementary Information The online version contains supplementary material available at 10.1186/s13256-021-02896-1.
Collapse
Affiliation(s)
- M Lacasse
- Geriatric Department, Tours University Hospital, Tours, France. .,Infectious Diseases Unit, Tours University Hospital, Tours, France.
| | - K Inyambo
- Geriatric Department, Tours University Hospital, Tours, France
| | - A Lemaignen
- Infectious Diseases Unit, Tours University Hospital, Tours, France
| | - M Mennecart
- Geriatric Department, Tours University Hospital, Tours, France
| | - S Gensburger
- Geriatric Department, Tours University Hospital, Tours, France
| | - A S Valentin
- Bacteriology Department of Tours University Hospital, Tours, France
| | - L Bernard
- Infectious Diseases Unit, Tours University Hospital, Tours, France
| | - B Fougère
- Geriatric Department, Tours University Hospital, Tours, France
| |
Collapse
|
7
|
Obry S, Khanna RK, Lacasse M, Reffet K, Cottier JP, Chesnay A, Cohen C. Severe bilateral optic neuropathy and meningitis secondary to invasive maxillary sinus aspergillosis. Int J Infect Dis 2021; 104:423-425. [PMID: 33453394 DOI: 10.1016/j.ijid.2021.01.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 01/05/2021] [Accepted: 01/08/2021] [Indexed: 11/26/2022] Open
Affiliation(s)
- Sandra Obry
- Regional University Hospital Centre Tours: Centre Hospitalier Regional Universitaire de Tours, Department of Diagnostic Neuroradiology, 2 boulevard Tonnellé, 37000 Tours Cedex 9, France.
| | - Raoul Kanav Khanna
- Regional University Hospital Centre Tours: Centre Hospitalier Regional Universitaire de Tours, Department of Ophthalmology, Tours, France
| | - Marion Lacasse
- Regional University Hospital Centre Tours: Centre Hospitalier Regional Universitaire de Tours, Department of Infectious disease, Tours, France
| | - Kévin Reffet
- Regional University Hospital Centre Tours: Centre Hospitalier Regional Universitaire de Tours, Department of Otolaryngology head and neck surgery, Tours, France
| | - Jean-Philippe Cottier
- Regional University Hospital Centre Tours: Centre Hospitalier Regional Universitaire de Tours, Department of Diagnostic Neuroradiology, 2 boulevard Tonnellé, 37000 Tours Cedex 9, France.
| | - Adélaïde Chesnay
- Regional University Hospital Centre Tours: Centre Hospitalier Regional Universitaire de Tours, Department of Parasitology and Mycology, Tours, France.
| | - Clara Cohen
- Regional University Hospital Centre Tours: Centre Hospitalier Regional Universitaire de Tours, Department of Diagnostic Neuroradiology, 2 boulevard Tonnellé, 37000 Tours Cedex 9, France.
| |
Collapse
|
8
|
Lacasse M, Merlini T, Miquelestorena-Standley E, Maillot F, Lioger B. Pseudoaneurysmal angiolymphoid hyperplasia with eosinophilia and IgG4-related disease: A possible overlap? Presse Med 2020; 49:104019. [PMID: 32234382 DOI: 10.1016/j.lpm.2020.104019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 11/28/2018] [Accepted: 03/05/2019] [Indexed: 10/24/2022] Open
Affiliation(s)
- Marion Lacasse
- Université François-Rabelais de Tours, 37000 Tours, France; Service de médcine interne, CHRU de Tours, 37000 Tours, France
| | - Thierry Merlini
- Service de chirurgie vasculaire, CHRU de Tours, 37000 Tours, France
| | | | - François Maillot
- Université François-Rabelais de Tours, 37000 Tours, France; Service de médcine interne, CHRU de Tours, 37000 Tours, France
| | - Bertrand Lioger
- Université François-Rabelais de Tours, 37000 Tours, France; CNRS, GICC UMR 7292, 37000 Tours, France; Service de médecine interne et maladies systémiques, hôpital Saint-Louis, 75010 Paris, France.
| |
Collapse
|
9
|
Sunder S, Grammatico-Guillon L, Lemaignen A, Lacasse M, Gaborit C, Boutoille D, Tattevin P, Denes E, Guimard T, Dupont M, Fauchier L, Bernard L. Incidence, characteristics, and mortality of infective endocarditis in France in 2011. PLoS One 2019; 14:e0223857. [PMID: 31652280 PMCID: PMC6814232 DOI: 10.1371/journal.pone.0223857] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 05/23/2019] [Accepted: 09/30/2019] [Indexed: 12/13/2022] Open
Abstract
Objectives We assessed the determinants of mortality in infective endocarditis (IE), using the national hospital discharge databases (HDD) in 2011. Methods IE stays were extracted from the national HDD, with a definition based on IE-related diagnosis codes. This definition has been assessed according to Duke criteria by checking a sample of medical charts of IE giving a predictive positive value of 86.1% (95% confidence interval (CI): 82.7% - 89.5%). The impact of heart valve surgery on survival has been studied if performed during the initial stay, and over the year of follow-up. Risk factors of in-hospital mortality were identified using logistic regression model for the initial stay and Cox Time-dependent model for the 1-year mortality. Results The analysis included 6,235 patients. The annual incidence of definite IEs was 63 cases/million residents. Staphylococci and Streptococci were the most common bacteria (44% and 45%, respectively). A valvular surgery was performed in 20% of cases, but substantial variations existed between hospitals. The in-hospital mortality was 21% (ranging 12% to 27% according to the region of patients), associated with age>70, chronic liver disease, renal failure, S. aureus, P. aeruginosa or candida infection and strokes whereas valvular surgery, a native valve IE or intraveinous drug use (right heart IE) were significantly protective for an initial death. The same factors were associated with the one-year mortality, except for valvular surgery which was associated with a 1.4-fold higher risk of death during the year post IE. Conclusion We reported a high IE incidence rate. Valvular surgery was considerably less frequent in this study than in the previous published data (near 50%) whereas mortality was similar. Surgery was associated with higher survival if undergone within the initial stay. There were significant regional differences in frequency of surgery but it did not impact mortality.
Collapse
Affiliation(s)
- S. Sunder
- CH de Niort, Service des Maladies Infectieuses et Tropicale, Niort, France
| | - L. Grammatico-Guillon
- CHRU de Tours, Unité d’Épidémiologie des données cliniques, EpiDcliC, Tours, France
- Unité Inserm 1259, Université de tours, Tours, France
- * E-mail:
| | - A. Lemaignen
- CHRU de Tours, Service de Médecine Interne et Maladies Infectieuses, Tours, France
| | - M. Lacasse
- CHRU de Tours, Service de Médecine Interne et Maladies Infectieuses, Tours, France
| | - C. Gaborit
- Unité Inserm 1259, Université de tours, Tours, France
| | - D. Boutoille
- CHU de Nantes, Service des Maladies Infectieuses et Tropicales, Nantes, France
| | - P. Tattevin
- CHU de Rennes, Service des Maladies Infectieuses et Réanimation Médicale, Rennes, France
| | - E. Denes
- CHU de Limoges, Service des Maladies Infectieuses et Tropicales, Limoges, France
| | - T. Guimard
- CH de La Roche sur Yon, Service des Maladies Infectieuses, La Roche sur Yon, France
| | - M. Dupont
- CH de Saint Malo, Service des Maladies Respiratoires et Infectieuses, Saint Malo, France
| | - L. Fauchier
- Equipe d’accueil EA 1275, Université de Tours, Tours, France
- CHRU de Tours, Service de cardiologie, Tours, France
| | - L. Bernard
- CHRU de Tours, Unité d’Épidémiologie des données cliniques, EpiDcliC, Tours, France
- CHRU de Tours, Service de Médecine Interne et Maladies Infectieuses, Tours, France
| |
Collapse
|
10
|
Lacasse M, Lemaignen A, Dinh A, Cottier JP, Mulleman D, Roblot F, Le Moal G, Bernard L. Confirmation de l’efficacité de six semaines d’antibiothérapie et relais oral précoce dans les spondylodiscites infectieuses à Pyogènes. Med Mal Infect 2017. [DOI: 10.1016/j.medmal.2017.03.268] [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: 11/16/2022]
|
11
|
Lacasse M, Merlini T, Machet M, Bruneval P, Maillot F, Lioger B. Pseudo-anévrisme de l’artère radiale secondaire à une forme frontière entre une hyperplasie angiolymphoïde avec éosinophile et une maladie sclérosante à IgG4 vasculaire : à propos d’un cas. Rev Med Interne 2016. [DOI: 10.1016/j.revmed.2016.04.147] [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: 10/21/2022]
|
12
|
Desrosiers E, Lacasse M, Douville F, Rousseau M, Ct L, Legare F. Competency Documentation in Residency Training: A Challenging Pathway. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.072] [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: 11/24/2022]
|
13
|
Abstract
AbstractLignin, a complex natural polymer produced by all vascular terrestrial plants is second in abundance only to cellulose and is the matrix holding plant fibres together. Lignins are recovered mainly as byproducts from woodpulping processes with about 100 million tons produced annually worldwide.Large volume uses for lignin byproduct other than for generation of energy (kraft process) are most likely to be in materials applications.In the last decades many studies aimed to the recycling of different lignins (sulfite, kraft, organosolv, steam exploded, hydrolytic, etc.) in polymeric systems based on thermoplastics, thermosettings, elastomers, adhesives, sealants, etc.Among all the technical lignins, sulfate lignins are chemically the most reactive and are therefore used to modify polymers. The oldest and the most familiar application of lignin as a component of polymeric materials involves the reinforcement of rubber. Multicomponent materials can be created by combination with other macromolecules like polyethylene, polypropylene, or poly(vinyl alcohol) to produce polyblends, block copolymers or interpenetrating polymer networks.The present communication will try to present such examples of polymeric systems based on recycled lignin, and synthetic polymers such as: polyurethane, epoxy, acrylics, silicones.
Collapse
|
14
|
Miguelez M, Lacasse M, Kentner AC, Rizk I, Fouriezos G, Bielajew C. Short- and long-term effects of interleukin-2 on weight, food intake, and hedonic mechanisms in the rat. Behav Brain Res 2004; 154:311-9. [PMID: 15313018 DOI: 10.1016/j.bbr.2004.02.022] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2003] [Revised: 02/20/2004] [Accepted: 02/24/2004] [Indexed: 12/26/2022]
Abstract
In the present work, we investigated the short- and long-term effects of a single systemic injection of rat recombinant interleukin-2 on weight, food intake, and brain stimulation reward thresholds elicited from the ventral tegmental area. An inverted U-shaped dose-function was obtained with 0.5 microg producing the greatest increases in the threshold for rewarding brain stimulation which were sustained during the month long tests. No differences between groups in terms of maximum response rates, a measure of performance, were observed. Although all injected groups showed a minor decline in the rate of weight gain over time, percent efficiency of food utilization (percent weight gain/food intake) was the same across groups, suggesting that metabolic function was not affected by the cytokine. In animals with bilateral ventral tegmental area implants, there was no consistent correspondence between the threshold change obtained from ipsilateral stimulation and that associated with the contralateral site; side-to-side differences ranged from 0 to 100%, suggesting a specific interaction between cytokine activity and the locus of rewarding brain stimulation. These data suggest that peripheral IL-2 significantly modifies hedonic processes arising from medial forebrain bundle stimulation in a long-term manner. We further suggest that since this modulation appears to be notably site-specific, IL-2 receptors or its metabolites may not be evenly distributed within the medial forebrain bundle.
Collapse
Affiliation(s)
- M Miguelez
- School of Psychology, University of Ottawa, Ottawa, K1N 6N5, Canada
| | | | | | | | | | | |
Collapse
|
15
|
Abstract
BACKGROUND Routinely, 450 mL of blood is collected into 63 mL of CPDA-1, for a final anticoagulant:blood ratio of approximately 1:7 in a whole-blood autologous unit. If less than 300 mL of blood is to be collected, the AABB standards suggest that there should be a proportionate decrease in anticoagulant. Data from an autologous blood program showed a range in volume from 92 mL to 667 mL per bag, which reflects an anticoagulant:blood ratio of 2:1 to 1:10. STUDY DESIGN AND METHODS To determine the effects of these ratios on the in vitro function of RBCs at various anticoagulant ratios, blood was collected into different amounts of anticoagulant, and various measurements were made during storage. RESULTS The number of RBCs and the MCV remained constant over time, regardless of the anticoagulant dilution used. Plasma free Hb increased with time with all dilutions. At a 1:2 ratio, it rose from 734 mg per L on Day 1 to 1805 mg per L on Day 35, and at 1:8, it was 355 mg per L for Day 1 and 854 mg per L on Day 35. Plasma sodium decreased and the potassium increased over time with all dilutions. From Day 1 to Day 35, there was a nine-fold increase in potassium at both the 1:2 and 1:8 dilutions (2.4 to 22.9 mmol/L, 3.2 to 29.6 mmol/L, respectively). The LDH increased over time and the pH decreased in all of the dilutions. Osmotic fragility remained constant at the 1:8 dilution but decreased at all of the other dilutions with storage, with 44-percent fragility on Day 35 at the 1:2 ratio. The WBC and platelet counts decreased consistently over time. Overall, 1 percent of the autologous units were below the cutoff volume of 300 mL at which an adjustment of the anticoagulant volume is required. CONCLUSION Plasma Hb and plasma potassium concentrations are considerably higher in low-volume units, which indicates that deviation from standard collection procedures is deleterious to RBCs.
Collapse
Affiliation(s)
- N Cober
- Division of Hematology and Transfusion Medicine, Department of Pathology and Laboratory Medicine, The Ottawa Hospital, Ottawa, Ontario, Canada
| | | | | | | |
Collapse
|
16
|
|
17
|
Lacasse M, Fortier C, Chakir J, Côté L, Deslauriers N. Acquired resistance and persistence of Candida albicans following oral candidiasis in the mouse: a model of the carrier state in humans. Oral Microbiol Immunol 1993; 8:313-8. [PMID: 8265206 DOI: 10.1111/j.1399-302x.1993.tb00580.x] [Citation(s) in RCA: 21] [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: 01/29/2023]
Abstract
In our experimental model of oral candidiasis in the CD1 mouse, the primary infection showed reproducible Candida overgrowth kinetics with a peak level on day 5 of the infection. After day 7, the population stabilized at about 300 colony-forming units per excised mucosal tissue. The primary infection triggered an inflammatory response that resolved in under 8 days. At this point, the histological pattern of the mucosa reached a new equilibrium between recruited and resident mononuclear cells. The primary infection also rapidly stimulated cellular immunity, as measured from day 4 by a delayed-type hypersensitivity footpad reaction. Following a second topical challenge with Candida 30 days after the primary infection, the infection was barely detectable and a typical local delayed-type hypersensitivity reaction occurred between 24-72 h. It is proposed that acquired resistance, in conjunction with low-level persistence of Candida in our model, mimics the carrier state in sensitized humans.
Collapse
Affiliation(s)
- M Lacasse
- Groupe de Recherche en Ecologie Buccale (GREB), Faculté de médecine dentaire, Université Laval, Québec, Canada
| | | | | | | | | |
Collapse
|
18
|
|
19
|
Abstract
A model of oral candidosis was developed in order to investigate histologic and microbiologic aspects of this host-parasite interaction under controlled experimental conditions. Normal adult CD-1 mice were inoculated by the topical application of 10(8) Candida albicans blastospores, and oral colonization was monitored by the quantitative culturing of saliva samples and of digested oral mucosa. Tissue sections of the mucosa were examined in a kinetic study ranging from 2 h to 13 days postinoculation. We report here that oral colonization by C. albicans can be induced in normal adult mice without the use of any compromising agent and that the animals recover from this mucosal infection following a reproducible pattern. Temporal analysis of the oral histopathology showed that distinct patterns of inflammation are associated with particular stages in the development of the infectious foci. This experimental model offers a means of further investigating the host-parasite interactions involved in the onset and development of oral candidosis.
Collapse
Affiliation(s)
- M Lacasse
- Department of Biochemistry (Sciences), Dental School, Laval University, Québec, Canada
| | | | | | | | | |
Collapse
|
20
|
|
21
|
Affiliation(s)
- M Lacasse
- Departement de Biochimie, Faculté de Médecine, Université Laval, Québec, Canada
| | | | | | | |
Collapse
|
22
|
|
23
|
Leblond PF, Lacasse M, Morillon M, Huot-Petitclerc MC. [The role of hematocrit on blood viscosity]. Union Med Can 1983; 112:22-5. [PMID: 6836773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
24
|
Lorian V, Lacasse M. [Culture medium for the direct differentiation of human and bovine mycobacteria from atypical mycobacteria]. Rev Tuberc Pneumol (Paris) 1967; 31:874-6. [PMID: 4988379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|