1
|
Cinotti E, Tognetti L, Cartocci A, Lamberti A, Gherbassi S, Orte Cano C, Lenoir C, Dejonckheere G, Diet G, Fontaine M, Miyamoto M, Perez‐Anker J, Solmi V, Malvehy J, del Marmol V, Perrot JL, Rubegni P, Suppa M. Line-field confocal optical coherence tomography for actinic keratosis and squamous cell carcinoma: a descriptive study. Clin Exp Dermatol 2021; 46:1530-1541. [PMID: 34115900 PMCID: PMC9293459 DOI: 10.1111/ced.14801] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Early and accurate diagnosis of cutaneous squamous cell carcinomas (SCCs) and actinic keratoses (AK) is fundamental to reduce their associated morbidity and to select the correct treatment. Line-field confocal optical coherence tomography (LC-OCT) is a new imaging device that can characterize healthy skin and basal cell carcinoma, but no large studies on keratinocyte cell tumours have yet been published. AIM To identify and describe LC-OCT criteria associated with SCC and AK, and to compare LC-OCT findings in these tumours. METHODS A retrospective observational multicentre study was conducted. Lesions were imaged with the LC-OCT device before surgery and examined histologically. LC-OCT criteria for AK/SCC were identified and their presence was evaluated in all study lesions. Univariate and multivariate analyses were performed to compare AK and SCCs, and to investigate differences between in situ and invasive tumours. RESULTS In total, 158 patients with 50 AK and 108 SCCs (62 in situ and 46 invasive) were included. Cytological and architectural alterations were found in most lesions, and differences were found between AK and SCCs. Although the visualization of the dermoepidermal junction (DEJ) was often hampered by hyperkeratosis and acanthosis, an outlined DEJ without broad strands was observed in almost all AK and almost all in situ SCCs, but in only three invasive SCCs (P < 0.001) when the DEJ was detectable. CONCLUSION Our results suggest that LC-OCT can help clinicians in the identification of AK and SCC and their differentiation, providing a real-time and noninvasive examination. Further studies are needed to confirm our data.
Collapse
Affiliation(s)
- E. Cinotti
- Dermatology UnitDepartment of MedicalSurgical and Neurological SciencesUniversity of SienaSienaItaly
| | - L. Tognetti
- Dermatology UnitDepartment of MedicalSurgical and Neurological SciencesUniversity of SienaSienaItaly
| | - A. Cartocci
- Department of Medical BiotechnologiesUniversity of SienaSienaItaly
| | - A. Lamberti
- Dermatology UnitDepartment of MedicalSurgical and Neurological SciencesUniversity of SienaSienaItaly
| | - S. Gherbassi
- Dermatology UnitDepartment of MedicalSurgical and Neurological SciencesUniversity of SienaSienaItaly
| | - C. Orte Cano
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
| | - C. Lenoir
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
| | - G. Dejonckheere
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
| | - G. Diet
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
| | - M. Fontaine
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
| | - M. Miyamoto
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
| | - J. Perez‐Anker
- Melanoma UnitHospital Clinic BarcelonaUniversity of BarcelonaBarcelonaSpain
- CIBER de Enfermedades RarasInstituto de Salud Carlos IIIBarcelonaSpain
| | - V. Solmi
- Dermatology UnitDepartment of MedicalSurgical and Neurological SciencesUniversity of SienaSienaItaly
| | - J. Malvehy
- Melanoma UnitHospital Clinic BarcelonaUniversity of BarcelonaBarcelonaSpain
- CIBER de Enfermedades RarasInstituto de Salud Carlos IIIBarcelonaSpain
| | - V. del Marmol
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
| | - J. L. Perrot
- Department of DermatologyUniversity Hospital of Saint‐EtienneSaint‐EtienneFrance
| | - P. Rubegni
- Dermatology UnitDepartment of MedicalSurgical and Neurological SciencesUniversity of SienaSienaItaly
| | - M. Suppa
- Department of DermatologyHôpital ErasmeUniversité Libre de BruxellesBrusselsBelgium
- Department of DermatologyInstitut Jules BordetUniversité Libre de BruxellesBrusselsBelgium
| |
Collapse
|
2
|
Shah M, Yoshino T, Tebbutt N, Grothey A, Tabernero J, Xu R, Taieb J, Cervantes A, Oh S, Yamaguchi K, Fakih M, Falcone A, Wu C, Chiu V, Tomasek J, Bendell J, Fontaine M, Hitron M, Xu B, Van Cutsem E. O-7 FOLFIRI ± napabucasin in patients with previously treated metastatic colorectal cancer: Overall survival results from the phase 3 CanStem303C study. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.011] [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: 11/28/2022] Open
|
3
|
Bintein F, Yannoutsos A, Chatellier G, Fontaine M, Damotte D, Paterlini-Bréchot P, Meyer G, Duchatelle V, Marini V, Schwering KL, Labrousse C, Beaussier H, Zins M, Salmeron S, Lajonchère JP, Priollet P, Emmerich J, Trédaniel J. Patients with atherosclerotic peripheral arterial disease have a high risk of lung cancer: Systematic review and meta-analysis of literature. J Med Vasc 2021; 46:53-65. [PMID: 33752847 DOI: 10.1016/j.jdmv.2020.12.005] [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] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 12/23/2020] [Indexed: 12/24/2022]
Abstract
PURPOSE Lung cancer and atherosclerosis share common risk factors. Literature data suggest that the prevalence of lung malignancy in patients with peripheral arterial disease (PAD) is higher than in the general population. Our goal was to determine, through a systematic literature review, the prevalence of lung cancer in patients with PAD. METHODS We consulted available publications in the Cochrane library, MEDLINE, PUBMED, EMBASE, and ClinicalTrials.gov. We included all articles, written in English or French, published between 1990 and 2020 reporting the prevalence of lung cancer in patients with PAD (atherosclerotic aortic aneurysm or peripheral occlusive diseases). Patients with coronary artery disease, cardiac valvulopathy or carotid stenosis were not included. We did not include case reports. We performed a critical analysis of each article. Data were collected from two independent readers. A fixed effect model meta-analysis allowed to estimate a summary prevalence rate. RESULTS We identified 303 articles, and selected 19 articles according to selection criteria. A total of 16849 patients were included (mean age 68.3 years, 75.1% of males). Aortic aneurysms were found in 29% of patients and atherosclerotic occlusive disease in 66% of patients. Lung cancer was identified in 538 patients, representing a prevalence of 3%. DISCUSSION Lung cancer is found in 3% of patients with atherosclerotic PAD. This prevalence is higher than that found in lung cancer screening programs performed in the general population of smokers and former smokers. These patients should be screened for lung cancer. Their selection may dramatically increase the benefit of lung cancer screening.
Collapse
Affiliation(s)
- F Bintein
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France.
| | - A Yannoutsos
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France; Inserm UMR 1153 Center of Research in Epidemiology and Statistics, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - G Chatellier
- Hôpital européen Georges-Pompidou, AP-HP, 75015 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | | | - D Damotte
- Hôpital Cochin, AP-HP, 75014 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France; Unité Inserm U1138, centre de recherche des Cordeliers, Paris, France
| | | | - G Meyer
- Hôpital européen Georges-Pompidou, AP-HP, 75015 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - V Duchatelle
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - V Marini
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | | | - C Labrousse
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - H Beaussier
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - M Zins
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - S Salmeron
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - J-P Lajonchère
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - P Priollet
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France
| | - J Emmerich
- Groupe hospitalier Paris Saint-Joseph, 75014 Paris, France; Inserm UMR 1153 Center of Research in Epidemiology and Statistics, Université Paris Descartes, Sorbonne Paris Cité, Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - J Trédaniel
- Hôpital européen Georges-Pompidou, AP-HP, 75015 Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France; Unité Inserm UMR-S 1124, toxicologie, pharmacologie et signalisation cellulaire, Paris, France
| |
Collapse
|
4
|
Suppa M, Fontaine M, Dejonckheere G, Cinotti E, Yélamos O, Diet G, Tognetti L, Miyamoto M, Orte Cano C, Perez-Anker J, Panagiotou V, Trepant AL, Monnier J, Berot V, Puig S, Rubegni P, Malvehy J, Perrot JL, Del Marmol V. Line-field confocal optical coherence tomography of basal cell carcinoma: a descriptive study. J Eur Acad Dermatol Venereol 2020; 35:1099-1110. [PMID: 33398911 DOI: 10.1111/jdv.17078] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/01/2020] [Accepted: 10/28/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Early diagnosis and subtype classification of basal cell carcinoma (BCC) are crucial to reduce morbidity and optimize treatment. Good accuracy in differentiating BCC from clinical imitators has been achieved with existing diagnostic strategies but lower performance in discriminating BCC subtypes. Line-field confocal optical coherence tomography (LC-OCT) is a new technology able to combine the technical advantages of reflectance confocal microscopy and OCT. OBJECTIVES To identify and describe LC-OCT criteria associated with BCC and explore their association with BCC subtypes. METHODS Basal cell carcinoma were imaged with a handheld LC-OCT device before surgical excision. LC-OCT images were retrospectively evaluated by three observers for presence/absence of criteria for BCC. Multivariate logistic regression models were used to find independent predictors of BCC subtypes. RESULTS Eighty-nine histopathologically proven BCCs were included, of which 66 (74.2%) were pure subtypes [superficial BCC (sBCC): 19/66 (28.8%); nodular BCC (nBCC): 31/66 (47.0%); infiltrative BCC (iBCC): 16/66 (24.2%)]. Lobules, blood vessels and small bright cells within epidermis/lobules were the most frequent criteria for BCC. LC-OCT criteria independently associated with sBCC were presence of hemispheric lobules, absence of lobule separation from the epidermis, absence of stretching of the stroma; with nBCC were presence of macrolobules, absence of lobule connection to the epidermis; and with iBCC were presence of branched lobules. CONCLUSIONS This was the first study describing the characteristics of BCC under LC-OCT examination. We proposed morphologic criteria, which could be potentially useful for diagnosis and subtype classification of BCC, as well as for its therapeutic management. Future studies are needed to assess these hypotheses.
Collapse
Affiliation(s)
- M Suppa
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium.,Department of Dermatology, Institut Jules Bordet, Université Libre de Bruxelles, Brussels, Belgium
| | - M Fontaine
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - G Dejonckheere
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - E Cinotti
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - O Yélamos
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain.,Dermatology Department, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - G Diet
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - L Tognetti
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - M Miyamoto
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - C Orte Cano
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - J Perez-Anker
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain.,CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - V Panagiotou
- Department of Pathology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - A L Trepant
- Department of Pathology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - J Monnier
- Department of Dermatology, AP-HM, Aix-Marseille University, Marseille, France
| | - V Berot
- Department of Dermatology, University Hospital of Saint-Etienne, Saint-Etienne, France
| | - S Puig
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain.,CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - P Rubegni
- Dermatology Unit, Department of Medical, Surgical and Neurological Sciences, University of Siena, Siena, Italy
| | - J Malvehy
- Melanoma Unit, Hospital Clinic Barcelona, University of Barcelona, Barcelona, Spain.,CIBER de enfermedades raras, Instituto de Salud Carlos III, Barcelona, Spain
| | - J L Perrot
- Department of Dermatology, University Hospital of Saint-Etienne, Saint-Etienne, France
| | - V Del Marmol
- Department of Dermatology, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| |
Collapse
|
5
|
Monnier J, Tognetti L, Miyamoto M, Suppa M, Cinotti E, Fontaine M, Orte Cano C, Perez J, Yelamos O, Berot V, Rubegni P, Puig S, Del Marmol V, Malvehy J, Perrot JL. Caractérisation in vivo de la peau saine par tomographie confocale à cohérence optique en ligne (LC-OCT) : une nouvelle technique d’imagerie cutanée non-invasive en dermatologie. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.257] [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: 11/28/2022]
|
6
|
Perrot JL, Suppa M, Cinotti E, Fontaine M, Dejonckheere G, Tognetti L, Rubegni P, Diet G, Miyamoto M, Orte Cano C, Monnier J, Bérot V, Puig S, Perez Anker J, Malvehy J, Del Marmol V, Forestier S, Cazorla G, Chauvel Picard J. La tomographie confocale à cohérence optique en ligne de la peau saine du visage : première étude descriptive. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.259] [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: 10/22/2022]
|
7
|
Monnier J, Tognetti L, Miyamoto M, Suppa M, Cinotti E, Fontaine M, Perez J, Orte Cano C, Yélamos O, Puig S, Dubois A, Rubegni P, Marmol V, Malvehy J, Perrot J. In
vivo
characterization of healthy human skin with a novel, non‐invasive imaging technique: line‐field confocal optical coherence tomography. J Eur Acad Dermatol Venereol 2020; 34:2914-2921. [DOI: 10.1111/jdv.16857] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/21/2020] [Indexed: 01/08/2023]
Affiliation(s)
- J. Monnier
- Department of Dermatology Aix‐Marseille University Marseille France
| | - L. Tognetti
- Dermatology Unit Department of Medical, Surgical and Neurological Sciences University of Siena Siena Italy
| | - M. Miyamoto
- Department of Dermatology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - M. Suppa
- Department of Dermatology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
- Institut Jules Bordet Université Libre de Bruxelles Brussels Belgium
| | - E. Cinotti
- Dermatology Unit Department of Medical, Surgical and Neurological Sciences University of Siena Siena Italy
| | - M. Fontaine
- Department of Dermatology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - J. Perez
- Melanoma Unit Hospital Clinic Barcelona University of Barcelona Catalonia Spain
- CIBER de enfermedades raras Instituto de Salud Carlos III Barcelona Spain
| | - C. Orte Cano
- Department of Dermatology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - O. Yélamos
- Melanoma Unit Hospital Clinic Barcelona University of Barcelona Catalonia Spain
- CIBER de enfermedades raras Instituto de Salud Carlos III Barcelona Spain
| | - S. Puig
- Melanoma Unit Hospital Clinic Barcelona University of Barcelona Catalonia Spain
- CIBER de enfermedades raras Instituto de Salud Carlos III Barcelona Spain
| | - A. Dubois
- Institut d'Optique Graduate School CNRS Laboratoire Charles Fabry Université Paris‐Saclay Palaiseau France
| | - P. Rubegni
- Dermatology Unit Department of Medical, Surgical and Neurological Sciences University of Siena Siena Italy
| | - V. Marmol
- Department of Dermatology Hôpital Erasme Université Libre de Bruxelles Brussels Belgium
| | - J. Malvehy
- Melanoma Unit Hospital Clinic Barcelona University of Barcelona Catalonia Spain
- CIBER de enfermedades raras Instituto de Salud Carlos III Barcelona Spain
| | - J.L. Perrot
- Department of Dermatology University Hospital of Saint‐Etienne Saint‐Etienne France
| |
Collapse
|
8
|
De Bleye C, Fontaine M, Dumont E, Sacré PY, Hubert P, Theys N, Ziemons E. Raman imaging as a new analytical tool for the quality control of the monitoring of osteogenic differentiation in forming 3D bone tissue. J Pharm Biomed Anal 2020; 186:113319. [PMID: 32361470 DOI: 10.1016/j.jpba.2020.113319] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 12/13/2019] [Revised: 04/09/2020] [Accepted: 04/15/2020] [Indexed: 12/20/2022]
Abstract
In this study, adipose-derived stem cells (ASCs) are used to produce 3D bone grafts. The safety and the feasibility of using these bone grafts have been already showed and quality controls are already implemented. However, a cheaper, fast and non-destructive technique is required to monitor the osteogenic differentiation process. Here, the use of Raman imaging to monitor the synthesis of the extracellular matrix and its progressive mineralization occurring during the osteogenic differentiation process is investigated for the first time on a 3D in forming bone tissue. The attention was focused on Raman bands related to this matrix belonging to phosphate, phenylalanine and hydroxyproline, which are very distinctive and intense. The kinetic of the osteogenic differentiation process was first compared between a 2D and a 3D forming bone tissue. It was observed that the kinetics of the osteogenic differentiation process is slower in 3D in forming bone tissue. In a second step, an evaluation of the reliability of the Raman imaging method was performed including a study of the influence of the harvest biopsies position on the forming 3D bone tissue. The repeatability and the specificity of this method were also demonstrated. In a last step, several batches of ASCs were cultured and analyzed in 3D at different time points using Raman imaging. From the mean Raman spectra, mineral to matrix ratios (MTMR) were determined and used to evaluate the formation of mineral deposits accompanying the extracellular matrix synthesis which is indicative of an ongoing osteogenic differentiation process. These ratios peaked between the day 35 and 49. This observation was very interesting since it corresponds to the time at which the 3D bone grafts are used for the patient surgery. To conclude, Raman imaging allowed fast acquisition and time-resolved monitoring in vitro of the mineralization of extracellular matrix during osteogenic differentiation.
Collapse
Affiliation(s)
- C De Bleye
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium.
| | - M Fontaine
- Novadip Biosciences, Rue Grandbonpré 11, 1435 Mont-Saint-Guibert, Belgium
| | - E Dumont
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
| | - P-Y Sacré
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
| | - Ph Hubert
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
| | - N Theys
- Novadip Biosciences, Rue Grandbonpré 11, 1435 Mont-Saint-Guibert, Belgium
| | - E Ziemons
- University of Liege (ULiege), CIRM, Vibra-Santé HUB, Department of Pharmacy, Laboratory of Pharmaceutical Analytical Chemistry, CHU, Avenue Hippocrate 15, B36, 4000 Liège, Belgium
| |
Collapse
|
9
|
Temmerman L, Fontaine M, Rousch M, Schurgers L, Andersen G, Halvorsen B, Biessen E. The Macroscreen Platform: Sensing Cardiovascular Disease Associated Microenvironment. Atherosclerosis 2019. [DOI: 10.1016/j.atherosclerosis.2019.06.061] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
10
|
Farny B, Fontaine M, Latarjet J, Poupelin J, Voulliaume D, Ravat F. Estimation of blood loss during adult burn surgery. Burns 2018; 44:1496-1501. [DOI: 10.1016/j.burns.2018.04.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/31/2018] [Accepted: 04/27/2018] [Indexed: 12/17/2022]
|
11
|
Shahin K, Thompson KD, Inglis NF, Mclean K, Ramirez-Paredes JG, Monaghan SJ, Hoare R, Fontaine M, Metselaar M, Adams A. Characterization of the outer membrane proteome of Francisella noatunensis subsp. orientalis. J Appl Microbiol 2018; 125:686-699. [PMID: 29777634 DOI: 10.1111/jam.13918] [Citation(s) in RCA: 8] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/03/2018] [Accepted: 05/11/2018] [Indexed: 11/28/2022]
Abstract
AIMS The aims of the current study were to characterize the outer membrane proteins (OMPs) of Francisella noatunensis subsp. orientalis (Fno) STIR-GUS-F2f7, and identify proteins recognized by sera from tilapia, Oreochromis niloticus, (L) that survived experimental challenge with Fno. METHODS AND RESULTS The composition of the OMPs of a virulent strain of Fno (STIR-GUS-F2f7), isolated from diseased red Nile tilapia in the United Kingdom, was examined. The sarcosine-insoluble OMPs fraction was screened with tilapia hyperimmune sera by western blot analysis following separation of the proteins by 1D SDS-PAGE. Liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) was used to identify the various proteins present in the OMP profile. Two hundred and thirty-nine proteins were identified, of which 44 were found in the immunogenic band recognized by the tilapia hyperimmune serum. In silico analysis was performed to predict the function and location of the OMPs identified by MS. CONCLUSIONS Using a powerful proteomic-based approach in conjugation with western immunoblotting, proteins comprising the outer membrane fraction of Fno STIR-GUS-F2f7 were identified, catalogued and screened for immune recognition by tilapia sera. SIGNIFICANCE AND IMPACT OF THE STUDY The current study is the first report on the characterization of Fno-OMPs. The findings here provide preliminary data on bacterial surface proteins that exist in direct contact with the host's immune defences during infection and offer an insight into the pathogenesis of Fno.
Collapse
Affiliation(s)
- K Shahin
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, Scotland, UK.,Aquatic Animals Diseases Lab, Aquaculture Division, National Institute of Oceanography and Fisheries, Suez, Egypt
| | - K D Thompson
- Moredun Research Institute, Pentlands Science Park, Penicuik, Midlothian, UK
| | - N F Inglis
- Moredun Research Institute, Pentlands Science Park, Penicuik, Midlothian, UK
| | - K Mclean
- Moredun Research Institute, Pentlands Science Park, Penicuik, Midlothian, UK
| | - J G Ramirez-Paredes
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, Scotland, UK
| | - S J Monaghan
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, Scotland, UK
| | - R Hoare
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, Scotland, UK
| | - M Fontaine
- Benchmark Animal Health, Bush House, Edinburgh Technopole, Edinburgh, Midlothian, UK
| | - M Metselaar
- Benchmark Animal Health, Bush House, Edinburgh Technopole, Edinburgh, Midlothian, UK
| | - A Adams
- Faculty of Natural Sciences, Institute of Aquaculture, University of Stirling, Stirling, Scotland, UK
| |
Collapse
|
12
|
Fontaine M, Schwering KL, Priollet P, Labrousse C, Trédaniel J. Dépistage des cancers liés au tabac : l'information préalable aux patients. PSYCHO-ONCOLOGIE 2018. [DOI: 10.3166/s11839-017-0635-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Les tests de dépistage des cancers sont des procédures proposées à une large partie de la population, ce qui engage nécessairement des enjeux de communication. Les lois françaises et des recommandations spécifiques définissent les prérequis en matière d'information prédépistage. Cet article compare qualitativement l'information transmise par les médecins aux patients lors d'une proposition de participation à un dépistage des cancers liés au tabac et ces recommandations pour tenter d'améliorer la communication médecin–patient dans ce cadre.
Collapse
|
13
|
Shah M, Grothey A, Tebbutt N, Xu R, Yoshino T, Cervantes A, Tabernero J, Taieb J, Falcone A, Xu B, Fontaine M, Borodyansky L, Van Cutsem E. CanStem303C trial: A Phase 3 Study of napabucasin (NAPA) in combination with 5-fluorouracil (5-FU), leucovorin, and irinotecan (FOLFIRI) in adult patients (pts) with previously treated metastatic colorectal cancer (mCRC) - Trial in progress. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
14
|
Hossard L, Guimier S, Vinatier F, Barbier JM, Delmotte S, Fontaine M, Rivoal JB. Source of Hyalesthes obsoletus Signoret planthopper (Hemiptera: Cixiidae) in southern France and potential effects of landscape. Bull Entomol Res 2018; 108:213-222. [PMID: 28891460 DOI: 10.1017/s0007485317000815] [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] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cixiid planthoppers are considered of major economic importance, as they can transmit phytoplasmas responsible for many plant diseases. While thorougly studied in vineyards, the epidemiology of stolbur phytoplasma, transmitted by Hyalesthes obsoletus Signoret, was rarely investigated on minor crops as lavender, where it leads to 'yellow decline' disease and large economic losses. The objective of this paper is to understand the effect of the local landscape characteristics on the presence and density of H. obsoletus in the 'Plateau de Valensole', southern France. Potential host plants of H. obsoletus were surveyed in three contrasted zones (in terms of crops and disease intensity), by uprooting plants and capturing adults in emergence traps. The localization and potential movements of H. obsoletus from the host plants towards lavandin (infertile hybrid of lavender) were determined using yellow sticky traps. Clary sage plants were found as major hosts of H. obsoletus. Flying insects were also caught in fields of lavandin, although emergence traps and plant uprooting did not confirm this crop as a winter host, i.e., as a reservoir for the insect. Based on one zone, we showed that attractiveness may depend on crop (clary sage or lavandin) and on its age, as well as on the distance to the supposed source field. These results suggest that clary sage could be an important host of H. obsoletus, whose density largely varies between zones. Genetic studies would be required to confirm the role of clary sage in the dissemination of yellow decline of lavandin.
Collapse
Affiliation(s)
- L Hossard
- INRA, UMR0951 Innovation,F-34060 Montpellier,France
| | - S Guimier
- INRA, UMR0951 Innovation,F-34060 Montpellier,France
| | - F Vinatier
- INRA, UMR1221 LISAH,F-34060 Montpellier,France
| | - J M Barbier
- INRA, UMR0951 Innovation,F-34060 Montpellier,France
| | - S Delmotte
- INRA, UMR0951 Innovation,F-34060 Montpellier,France
| | | | | |
Collapse
|
15
|
Ravat F, Fontaine M, Poupelin J, Payre J, Aimard R, Lalloue C, Viard R, Gir P, Voulliaume D. [Not Available]. Ann Burns Fire Disasters 2018; 31:54-58. [PMID: 30174574 PMCID: PMC6116656] [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] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 01/11/2018] [Indexed: 06/08/2023]
Abstract
At the end of 2013, we proposed the possibility of obtaining specialized burn advice 24/7 via pictures transmitted through a dedicated email address, to healthcare professionals. This simple tool is now a success, and we received one request for advice per day in 2015, resulting in an exchange of numerous emails. This simple process offers a number of benefits: it allows burn centres to regulate patient flows all year long, gives healthcare professionals access to a burn care specialist when and as quickly as they need, ensures each patient receives dedicated care, and allows national authorities to provide the best public health service and gain financial profits. However, a tool that uses email is much too simple and insufficiently secure, therefore it can only represent the first step towards a much more "professional" solution.
Collapse
Affiliation(s)
- F. Ravat
- F. Ravat
Centre de Brûlés, Centre Hospitalier Saint-Joseph et Saint-Luc,20 quai Claude Bernard, 69007 LyonFrance
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Valkenet K, Trappenburg JCA, Ruurda JP, Guinan EM, Reynolds JV, Nafteux P, Fontaine M, Rodrigo HE, van der Peet DL, Hania SW, Sosef MN, Willms J, Rosman C, Pieters H, Scheepers JJG, Faber T, Kouwenhoven EA, Tinselboer M, Räsänen J, Ryynänen H, Gosselink R, van Hillegersberg R, Backx FJG. Multicentre randomized clinical trial of inspiratory muscle training versus usual care before surgery for oesophageal cancer. Br J Surg 2018; 105:502-511. [DOI: 10.1002/bjs.10803] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 10/12/2017] [Accepted: 11/27/2017] [Indexed: 01/22/2023]
Abstract
Abstract
Background
Up to 40 per cent of patients undergoing oesophagectomy develop pneumonia. The aim of this study was to assess whether preoperative inspiratory muscle training (IMT) reduces the rate of pneumonia after oesophagectomy.
Methods
Patients with oesophageal cancer were randomized to a home-based IMT programme before surgery or usual care. IMT included the use of a flow-resistive inspiratory loading device, and patients were instructed to train twice a day at high intensity (more than 60 per cent of maximum inspiratory muscle strength) for 2 weeks or longer until surgery. The primary outcome was postoperative pneumonia; secondary outcomes were inspiratory muscle function, lung function, postoperative complications, duration of mechanical ventilation, length of hospital stay and physical functioning.
Results
Postoperative pneumonia was diagnosed in 47 (39·2 per cent) of 120 patients in the IMT group and in 43 (35·5 per cent) of 121 patients in the control group (relative risk 1·10, 95 per cent c.i. 0·79 to 1·53; P = 0·561). There was no statistically significant difference in postoperative outcomes between the groups. Mean(s.d.) maximal inspiratory muscle strength increased from 76·2(26·4) to 89·0(29·4) cmH2O (P < 0·001) in the intervention group and from 74·0(30·2) to 80·0(30·1) cmH2O in the control group (P < 0·001). Preoperative inspiratory muscle endurance increased from 4 min 14 s to 7 min 17 s in the intervention group (P < 0·001) and from 4 min 20 s to 5 min 5 s in the control group (P = 0·007). The increases were highest in the intervention group (P < 0·050).
Conclusion
Despite an increase in preoperative inspiratory muscle function, home-based preoperative IMT did not lead to a decreased rate of pneumonia after oesophagectomy. Registration number: NCT01893008 (https://www.clinicaltrials.gov).
Collapse
Affiliation(s)
- K Valkenet
- Department of Rehabilitation, Physiotherapy Science and Sports, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - J C A Trappenburg
- Department of Rehabilitation, Physiotherapy Science and Sports, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - J P Ruurda
- Department of Surgery, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - E M Guinan
- Discipline of Physiotherapy, Trinity Centre for Health Sciences, St James's Hospital, Dublin, Ireland
| | - J V Reynolds
- Department of Surgery, Trinity Centre for Health Sciences, St James's Hospital, Dublin, Ireland
| | - P Nafteux
- Department of Surgery, University Hospitals Leuven, Leuven, Belgium
| | - M Fontaine
- Department of Physiotherapy, University Hospitals Leuven, Leuven, Belgium
| | - H E Rodrigo
- Department of Rehabilitation, Physiotherapy Science and Sports, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - D L van der Peet
- Department of Surgery, VU University Medical Centre, Amsterdam, The Netherlands
| | - S W Hania
- Department of Physiotherapy, VU University Medical Centre, Amsterdam, The Netherlands
| | - M N Sosef
- Department of Surgery, Zuyderland Medical Centre, Heerlen, The Netherlands
| | - J Willms
- Department of Physiotherapy, Zuyderland Medical Centre, Heerlen, The Netherlands
| | - C Rosman
- Department of Surgery, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - H Pieters
- Department of Physiotherapy, Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - J J G Scheepers
- Department of Surgery, Reinier de Graaf Hospital, Delft, The Netherlands
| | - T Faber
- Department of Physiotherapy, Reinier de Graaf Hospital, Delft, The Netherlands
| | - E A Kouwenhoven
- Department of Surgery, Hospital Group Twente, Almelo, The Netherlands
| | - M Tinselboer
- Department of Physiotherapy, Hospital Group Twente, Almelo, The Netherlands
| | - J Räsänen
- Department of Surgery, Helsinki University Central Hospital, Helsinki, Finland
| | - H Ryynänen
- Department of Physiotherapy, Helsinki University Central Hospital, Helsinki, Finland
| | - R Gosselink
- Rehabilitation Sciences, University Hospitals Leuven, Leuven, Belgium
| | - R van Hillegersberg
- Department of Surgery, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - F J G Backx
- Department of Rehabilitation, Physiotherapy Science and Sports, University Medical Centre Utrecht, Utrecht, The Netherlands
| |
Collapse
|
17
|
Fortin J, Bodson L, Fontaine M, Depil-Duval A, Paulin P, Bitar M, Ravat F, Macher J, Hall A. Utilisation d’une solution polyamphotère lors de lésions et brûlures chimiques oculaires cutanées et buccales. effet sur la douleur de la diphotérine®. Ann Burns Fire Disasters 2017; 30:286-291. [PMID: 29983684 PMCID: PMC6033482] [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] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 10/24/2017] [Indexed: 06/08/2023]
Abstract
Polyamphoteric washing solutions (PWS) have been used for several years, mainly in industries, for cases of chemical ocular or cutaneous splashes by acid or alkali. We collected 37 cases reporting the use of PWS for ocular and cutaneous chemical splashes from several centres. Among the 37 cases, 55.26% resulted from occupational exposure. Among ocular exposures, initial clinical symptoms included pain (20 cases), blepharospasm (4 cases), hyperaemia (15 cases), palpebral oedema (2 cases) and blurred vision (7 cases). Among cutaneous exposures, 2 injuries were classified as deep, and 11 as superficial. Mean (SD) pain (VAS) before PWS was 6,29 +/- 2,74; mean (SD) pain after PWS was 1,47 +/- 1,73. Early application of PWS to the eye or skin reduces the intensity of pain that is associated with chemical damage. Early application of amphoteric solution appears to reduce the incidence of sequelae, provided its pre-hospital and hospital use is early. However, further studies are needed.
Collapse
Affiliation(s)
- J.L. Fortin
- Service de médecine de prévention, Saint-Etienne, France
| | - L. Bodson
- Service des urgences, Centre Hospitalier Universitaire de Liège, Belgique
| | | | - A. Depil-Duval
- Service d’accueil des urgences, Centre Hospitalier Eure-Seine, Évreux, France
| | - P. Paulin
- Service médical statutaire et de contrôle, Police Nationale, Dijon, France
| | - M.P. Bitar
- Service d’accueil des urgences, Hôpital Nord Franche-Comté, Trévenans, France
| | | | - J.M. Macher
- Service d’accueil des urgences, Saint-Dié-des-Vosges, France
| | - A. Hall
- Colorado School of Public Health, Denver, Colorado, USA
| |
Collapse
|
18
|
Lebreton T, Fontaine M, Le Floch R. [Not Available]. Ann Burns Fire Disasters 2017; 30:18-23. [PMID: 28592929 PMCID: PMC5446903] [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] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 02/12/2017] [Indexed: 06/07/2023]
Abstract
Cement burn is a common cause of chemical burns in France. They usually need surgical treatment. This retrospective study was performed among 49 patients, aged 21-71 years, admitted to the St Joseph-St Luc Hospital in Lyon, France. Patients were mainly male, fairly young (mean 44 years) and had a professional activity, although burns usually occurred at home. Burns were deep, on the lower limbs, and were not extensive (3% TBS). All but one patient needed grafting, performed on d13. LOS was eight days. Seven patients had to be admitted to a rehabilitation centre afterwards. This study confirms the local seriousness of cement burns. It emphasises their socio-economic impact since they occur in job-active patients. Education on cement hazards should be developed, targeting this population, who are seldom building professionals. Current regulations, classifying cement as an 'irritant', do not address the causticity of wet cement and should be amended.
Collapse
Affiliation(s)
- T. Lebreton
- Centre Hospitalier Saint Joseph et Saint Luc, 20 quai Claude Bernard, 69007 Lyon, France
| | - M. Fontaine
- Centre Hospitalier Saint Joseph et Saint Luc, 20 quai Claude Bernard, 69007 Lyon, France
| | - R. Le Floch
- Réanimation Chirurgicale et des Brûlés, PTMC, CHU Nantes, 44093 Nantes CEDEX, France
| |
Collapse
|
19
|
Pages-Bouic E, Millet I, Curros-Doyon F, Faget C, Fontaine M, Taourel P. Acute pelvic pain in females in septic and aseptic contexts. Diagn Interv Imaging 2015; 96:985-95. [PMID: 26441019 DOI: 10.1016/j.diii.2015.07.003] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 07/05/2015] [Indexed: 12/29/2022]
Abstract
Acute pelvic pain in women is a common reason for emergency department admission. There is a broad range of possible aetiological diagnoses, with gynaecological and gastrointestinal causes being the most frequently encountered. Gynaecological causes include upper genital tract infection and three types of surgical emergency, namely ectopic pregnancy, adnexal torsion, and haemorrhagic ovarian cyst rupture. The main gastrointestinal cause is acute appendicitis, which is the primary differential diagnosis for acute pelvic pain of gynaecological origin. The process of diagnosis will be guided by the clinical examination, laboratory study results, and ultrasonography findings, with suprapubic transvaginal pelvic ultrasonography as the first-line examination in this young population, and potentially cross-sectional imaging findings (computed tomography and MR imaging) if diagnosis remains uncertain.
Collapse
Affiliation(s)
- E Pages-Bouic
- Centre hospitalier universitaire régional Lapeyronie, department of medical imaging, 191, avenue du Doyen-Gaston-Giraud, 34090 Montpellier, France.
| | - I Millet
- Centre hospitalier universitaire régional Lapeyronie, department of medical imaging, 191, avenue du Doyen-Gaston-Giraud, 34090 Montpellier, France
| | - F Curros-Doyon
- Centre hospitalier universitaire régional Lapeyronie, department of medical imaging, 191, avenue du Doyen-Gaston-Giraud, 34090 Montpellier, France
| | - C Faget
- Centre hospitalier universitaire régional Lapeyronie, department of medical imaging, 191, avenue du Doyen-Gaston-Giraud, 34090 Montpellier, France
| | - M Fontaine
- Centre hospitalier universitaire régional Lapeyronie, department of medical imaging, 191, avenue du Doyen-Gaston-Giraud, 34090 Montpellier, France
| | - P Taourel
- Centre hospitalier universitaire régional Lapeyronie, department of medical imaging, 191, avenue du Doyen-Gaston-Giraud, 34090 Montpellier, France
| |
Collapse
|
20
|
Bonnichon P, Berger JP, Bonni N, Fontaine M, Pion-Graff J. [History of cancer and chemotherapy before chemotherapy]. Hist Sci Med 2014; 48:469-474. [PMID: 25962214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Chemotherapy stands today for cancer. In 1909, Paul Ehrlich (1854-1915) advocates the use of arsphenamine by infusion. So, he is considered as the father of chemotherapy. In fact, the first to have thought through chemotherapy was Sir Christopher Wren (1632-1723). In 1676, ideas and experiments on animals had sufficiently progressed to allow Michel Ettmuller (1644-1683) to publish the first edition of his book and several others were printed until 1753. In this book, he describes the first intravenous treatment, it sets the first indications, dosages and different products which can be used. However this method has been forgotten until the late 19th century.
Collapse
|
21
|
Yver J, Desbat L, Nozières E, Satger B, Fontaine M, Blaise S, Pernod G. [Feasibility of patient-injected anticoagulation therapy: the GRANTED experience]. J Mal Vasc 2013; 38:345-351. [PMID: 23962641 DOI: 10.1016/j.jmv.2013.06.002] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Accepted: 06/08/2013] [Indexed: 06/02/2023]
Abstract
BACKGROUND Injectable anticoagulation therapy is indicated for several months following diagnosis of venous thromboembolic disease (VTE) in a context of active neoplasia. Certain studies have shown an improvement in patient compliance using self-injections. PURPOSE Allow patients to safely make their own injections of anticoagulants after checking their aptitude and motivation. METHODS At the prescribing physician's request, the GRANTED network provided patients and/or the resource person with specific education and training. The educational program was proposed to patients with an indication for a treatment for at least 3 months. After becoming familiar with the injection material and its manipulation, the patient and/or resource person performed sham injections on test materials. Patients were then allowed to decide for themselves whether or not to participate in the self-injection protocol. The prescribing physician received a report from the training team. RESULTS From November 2010 to July 2012, 39 patients participated in the educational program, generally in a context of vitamin K antagonist prescriptions. Sixteen of these patients had a neoplasia. The educational program corrected erroneous or imprecise points of information, particularly concerning syringe purging. DISCUSSION The education program proved to be interesting for points other than those initially foreseen and allowed the team to rectify a certain number of erroneous messages unrecognized by the prescribing physicians. This result goes in line with the need for accompanying patients who have a prescription for self-injections and also emphasizes the need for careful follow-up.
Collapse
Affiliation(s)
- J Yver
- Unité de médecine vasculaire, clinique de médecine vasculaire, CHU de Grenoble, BP 217, 38043 Grenoble cedex 09, France.
| | | | | | | | | | | | | |
Collapse
|
22
|
Bigo C, Cuisset JM, Lecunff J, Fontaine M, Vallée L. Effets immédiats du méthylphenidate chez des patients présentant une dystrophinopathie. Arch Pediatr 2013. [DOI: 10.1016/j.arcped.2013.01.029] [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: 11/29/2022]
|
23
|
Chauvet C, Ménard C, Paris C, Tordjman I, Verger P, Fontaine M, Maladry P, Ruetsch M. État des lieux des sources d’information sur la prévention primaire des cancers d’origine professionnelle pour les médecins du travail : besoins et perspectives. ARCH MAL PROF ENVIRO 2012. [DOI: 10.1016/j.admp.2012.09.006] [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]
|
24
|
Thébault S, Machour N, Perrot F, Jouenne T, Lange C, Hubert M, Fontaine M, Tron F, Charlionet R. Objet et évolution méthodologique de l'analyse protéomique. ACTA ACUST UNITED AC 2012. [DOI: 10.4267/10608/1974] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
25
|
Gasque P, Legoedec J, Thomas A, Sumereau E, Schouft MT, Chan P, Fontaine M. Nouvelles fonctions pour le système du complément. Apport de l'étude des synthèses locales. ACTA ACUST UNITED AC 2012. [DOI: 10.4267/10608/851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
26
|
Alimoghaddam K, Weiss S, Logan A, Lowsky R, Fontaine M, Miklos D. Major ABO Mismatch Increases Red Blood Cell Transfusion Requirements After Allogeneic Hematopoietic Cell Transplantation Using Total Lymphoid Irradiation and Anti-Thymoglobulin Conditioning. Biol Blood Marrow Transplant 2011. [DOI: 10.1016/j.bbmt.2010.12.462] [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: 11/29/2022]
|
27
|
Abstract
Thermal injury induce a two-phase inflammatory response: first, a pro-inflammatory status, resulting in a systemic inflammatory response syndrome, then an anti-inflammatory phase characterized by a profound defect in cellular-mediated immunity. This inflammatory reaction proceeds from complex phenomenons in whom many cellular elements are involved (macrophage is the central one) and very complex molecular products interact (especially cytokines). These phenomenons promote significant physiopathologic consequences, especially on cardiovascular homeostasis and endothelial permeability, that lower the prognosis. The inflammatory reaction can be modified, enhanced or maintained by adverse events (i.e. infection) resulting in degradation of clinical situation. Despite a better comprehension of the phenomenons underlying this inflammatory process, diagnosis or therapeutic applications are at that time disappointing.
Collapse
Affiliation(s)
- F Ravat
- Centre des brûlés, centre hospitalier Saint-Joseph et Saint-Luc, 20, quai Claude-Bernard, 69007 Lyon, France.
| | | | | | | | | |
Collapse
|
28
|
Blaise S, Satger B, Fontaine M, Yver J, Rastel D, Toffin L, Seinturier C, Ramos M, Bosson JL, Pernod G. Évaluation d’un programme d’éducation thérapeutique pour les traitements anticoagulants oraux : expérience du réseau Ville-Hôpital GRANTED du secteur Sud-Isère. ACTA ACUST UNITED AC 2009; 34:346-53. [DOI: 10.1016/j.jmv.2009.07.088] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Accepted: 07/30/2009] [Indexed: 11/28/2022]
|
29
|
Tyan D, Chen G, Sequeira F, Vayntrub T, Kuo J, Fontaine M, Chin C. 68-P: L-C1q: New assay detects clinically relevant antibody (Ab) and predicts AMR. Hum Immunol 2009. [DOI: 10.1016/j.humimm.2009.09.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
30
|
Butwick A, Aleshi P, Fontaine M, Riley E, Goodnough L. Retrospective analysis of transfusion outcomes in pregnant patients at a tertiary obstetric center. Int J Obstet Anesth 2009; 18:302-8. [DOI: 10.1016/j.ijoa.2009.02.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Revised: 01/07/2009] [Accepted: 02/03/2009] [Indexed: 11/26/2022]
|
31
|
Joseph P, Suman SP, Li S, Beach CM, Steinke L, Fontaine M. Characterization of bison (Bison bison) myoglobin. Meat Sci 2009; 84:71-8. [PMID: 20374756 DOI: 10.1016/j.meatsci.2009.08.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Revised: 08/04/2009] [Accepted: 08/10/2009] [Indexed: 10/20/2022]
Abstract
Bison is an alternate meat species gaining increased popularity in North America. Although previous investigations reported that bison meat discolors faster than beef, the molecular basis of this observation has not been investigated. Therefore, the objective of the present study was to determine the redox stability, thermostability, and primary structure of bison myoglobin (Mb), in comparison with beef Mb. Purified bison and beef myoglobins were analyzed for autoxidation, lipid oxidation-induced oxidation, and thermostability. Matrix Assisted Laser Desorption Ionization-Time of Flight Mass Spectrometry was utilized for determining the exact molecular mass of bison Mb, whereas Edman degradation was employed to determine the amino acid sequence. Bison and beef myoglobins behaved similarly in autoxidation, lipid oxidation-induced oxidation, and thermostability. The observed molecular mass of bison and beef myoglobins was 16,949 Da, and the primary structure of bison Mb shared 100% similarity with beef and yak myoglobins. Noticeably, the amino acid sequence of bison Mb was different from other ruminant myoglobins, such as water-buffalo, sheep, goat, and red-deer. The present study is the first to report the primary structure of bison Mb. Same primary structure and similar biochemical attributes of bison and beef myoglobins suggested that the observed rapid discoloration in bison meat could not be attributed to biochemistry of bison Mb.
Collapse
Affiliation(s)
- P Joseph
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA
| | | | | | | | | | | |
Collapse
|
32
|
Griffiths MR, Neal JW, Fontaine M, Das T, Gasque P. Complement factor H, a marker of self protects against experimental autoimmune encephalomyelitis. J Immunol 2009; 182:4368-77. [PMID: 19299737 DOI: 10.4049/jimmunol.0800205] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The CNS innate immune response is a "double-edged sword" representing a fine balance between protective antipathogen responses and detrimental neurocytotoxic effects. Hence, it is important to identify the key regulatory mechanisms involved in the control of CNS innate immunity and which could be harnessed to explore novel therapeutic avenues. In analogy to the newly described neuroimmune regulatory proteins also known as "don't eat me" signals (CD200, CD47, CD22, fractalkine, semaphorins), we herein identify the key role of complement regulator factor H (fH) in controlling neuroinflammation initiated in an acute mouse model of Ab-dependent experimental autoimmune encephalomyelitis. Mouse fH was found to be abundantly expressed by primary cultured neurons and neuronal cell lines (N1E115 and Neuro2a) at a level comparable to BV2 microglia and CLTT astrocytes. Mouse neurons expressed other complement regulators crry and low levels of CD55. In the brain, the expression of fH was localized to neuronal bodies and axons, endothelial cells, microglia but not oligodendrocytes and myelin sheaths and was dramatically reduced in inflammatory experimental autoimmune encephalomyelitis settings. When exogenous human fH was administered to disease Ab-dependent experimental autoimmune encephalomyelitis animals, there was a significant decrease in clinical score, inflammation, and demyelination, as compared with PBS-injected animals. We found that the accumulation of human fH in the brain parenchyma protected neurons from complement opsonization, axonal injury, and leukocyte infiltration. Our data argue for a key regulatory activity of fH in neuroprotection and provide novel therapeutic avenues for CNS chronic inflammatory diseases.
Collapse
Affiliation(s)
- Mark R Griffiths
- Department of Medical Biochemistry, Cardiff University, United Kingdom
| | | | | | | | | |
Collapse
|
33
|
Suman SP, Joseph P, Li S, Steinke L, Fontaine M. Primary structure of goat myoglobin. Meat Sci 2009; 82:456-60. [PMID: 20416681 DOI: 10.1016/j.meatsci.2009.02.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Revised: 01/30/2009] [Accepted: 02/26/2009] [Indexed: 11/29/2022]
Abstract
Color stability attributes of goat meat are different from those of sheep meat, possibly due to species-specific differences in myoglobin (Mb) biochemistry. An examination of post-genomic era protein databases revealed that the primary structure of goat Mb has not been determined. Therefore, our objective was to characterize the primary structure of goat Mb. Goat Mb was isolated from cardiac muscles employing ammonium sulfate precipitation and gel-filtration chromatography, and Edman degradation was utilized to determine the amino acid sequence. Sequence analyses of intact Mb as well as tryptic- and cyanogen bromide-peptides yielded the complete primary structure of goat Mb, which shared 98.7% similarity with sheep Mb. Similar to other livestock myoglobins goat Mb has 153 residues. Comparison of the sequences of goat and sheep myoglobins revealed two amino acid substitutions - THRgoat8GLNsheep and GLYgoat52GLUsheep. Goat Mb contains 12 histidine residues. As observed in other meat-producing livestock species, distal and proximal histidines, responsible for stabilizing the heme group and coordinating oxygen-binding, are conserved in goat Mb.
Collapse
Affiliation(s)
- S P Suman
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA
| | | | | | | | | |
Collapse
|
34
|
Bénard M, Raoult E, Vaudry D, Leprince J, Falluel-Morel A, Gonzalez BJ, Galas L, Vaudry H, Fontaine M. Role of complement anaphylatoxin receptors (C3aR, C5aR) in the development of the rat cerebellum. Mol Immunol 2008; 45:3767-74. [DOI: 10.1016/j.molimm.2008.05.027] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2008] [Revised: 05/26/2008] [Accepted: 05/28/2008] [Indexed: 11/16/2022]
|
35
|
Dahhak S, Uhlen S, Mention K, Romond MB, Fontaine M, Gottrand F, Turck D, Michaud L. Acidose d-lactique chez un enfant présentant un syndrome de grêle court. Arch Pediatr 2008; 15:145-8. [DOI: 10.1016/j.arcped.2007.11.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Revised: 08/14/2007] [Accepted: 11/23/2007] [Indexed: 11/28/2022]
|
36
|
Fontaine M. [Nursing research exists, and I'll tell you about it!]. Rev Med Suisse 2007; 3:2356-2361. [PMID: 18018828] [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: 05/25/2023]
|
37
|
Griffiths MR, Neal JW, Fontaine M, Gasque P. Neuro-immune regulatory activities of complement factor H, a marker of ‘self’ in a model of experimental autoimmune encephalomyelitis. Mol Immunol 2007. [DOI: 10.1016/j.molimm.2007.06.210] [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: 11/29/2022]
|
38
|
Jégou JF, Chan P, Schouft MT, Gasque P, Vaudry H, Fontaine M. Protective DNA vaccination against myelin oligodendrocyte glycoprotein is overcome by C3d in experimental autoimmune encephalomyelitis. Mol Immunol 2007; 44:3691-701. [PMID: 17521729 DOI: 10.1016/j.molimm.2007.04.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 02/12/2007] [Accepted: 04/04/2007] [Indexed: 01/26/2023]
Abstract
Complement receptor 2 (CR2) and its physiological ligand, C3d, known for its molecular adjuvant property on the immune response, exhibit opposite effects with regard to autoimmunity. Although CR2 has been implicated in maintaining self-tolerance, recent studies reported a role for C3d signaling to CR2 in tolerance breakdown to self-antigens and the initiation of inflammatory autoimmune pathologies. In the present study, we have investigated the effect of C3d in a model of tolerogenic DNA vaccination encoding the myelin oligodendrocyte glycoprotein (MOG-DNA) which protected mice from the induction of an experimental autoimmune encephalomyelitis (EAE). We show that fusing two or three copies of C3d to MOG overcomes the protective effect of DNA vaccination. Multimeric C3d was able to revert the unresponsiveness state of specific T cells induced by MOG-DNA, independently of a modification in the Th1/Th2 cytokine pattern. Interestingly, the adjuvant effect of C3d was not sufficient to boost the anti-MOG antibody response after DNA vaccination. These findings suggest that C3d might be involved in self-tolerance breakdown and could contribute to the pathogenesis of central nervous system autoimmune disorders.
Collapse
Affiliation(s)
- Jean-François Jégou
- INSERM U413, IFRMP 23, Laboratory of Cellular and Molecular Neuroendocrinology, University of Rouen, 76821 Mont Saint-Aignan, France.
| | | | | | | | | | | |
Collapse
|
39
|
Jégou JF, Chan P, Schouft MT, Griffiths MR, Neal JW, Gasque P, Vaudry H, Fontaine M. C3d binding to the myelin oligodendrocyte glycoprotein results in an exacerbated experimental autoimmune encephalomyelitis. J Immunol 2007; 178:3323-31. [PMID: 17312184 DOI: 10.4049/jimmunol.178.5.3323] [Citation(s) in RCA: 11] [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] [Indexed: 11/19/2022]
Abstract
The complement system is known to contribute to demyelination in multiple sclerosis and experimental autoimmune encephalomyelitis. However, there are few data concerning the natural adjuvant effect of C3d on the humoral response when it binds to myelin Ags. This study addresses the effect of C3d binding to the myelin oligodendrocyte glycoprotein (MOG) in the induction of experimental autoimmune encephalomyelitis in C57BL/6J mice. Immunization with human MOG coupled to C3d was found to accelerate the appearance of clinical signs of the disease and to enhance its severity compared with MOG-immunized mice. This finding was correlated with an increased infiltration of leukocytes into the central nervous system accompanied by increased complement activation and associated with areas of demyelination and axonal loss. Furthermore, B cell participation in the pathogenesis of the disease was determined by their increased capacity to act as APCs and to form germinal centers. Consistent with this, the production of MOG-specific Abs was found to be enhanced following MOG/C3d immunization. These results suggest that binding of C3d to self-Ags could increase the severity of an autoimmune disease by enhancing the adaptive autoimmune response.
Collapse
Affiliation(s)
- Jean-François Jégou
- INSERM U413, Institut Fédératif de Recherches Multidisciplinaires sur les Peptides 23, University of Rouen, Place Emile Blondel, Mont Saint-Aignan Cedex, France
| | | | | | | | | | | | | | | |
Collapse
|
40
|
Falluel-Morel A, Vaudry D, Aubert N, Galas L, Benard M, Basille M, Fontaine M, Fournier A, Vaudry H, Gonzalez BJ. PACAP and ceramides exert opposite effects on migration, neurite outgrowth, and cytoskeleton remodeling. Ann N Y Acad Sci 2006; 1070:265-70. [PMID: 16888176 DOI: 10.1196/annals.1317.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [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: 11/12/2022]
Abstract
During brain development, cells that fail to reach their final destination or to establish proper connections are eliminated. It has been shown that the proinflammatory cytokine second messenger ceramides and the neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) play pivotal roles in the histogenesis of the cerebellum. However, little is known regarding the effects of these two factors on cerebellar granule cell migration. We have found that PACAP prevents the effects of C2-ceramide on granule cell motility and neurite outgrowth. These actions are attributable to opposite effects on actin distribution, tubulin polymerization, and Tau phosphorylation. These data suggest that PACAP and factors inducing ceramide production may control granule cell migration during cerebellar development.
Collapse
|
41
|
Castel H, Diallo M, Chatenet D, Leprince J, Desrues L, Schouft MT, Fontaine M, Dubessy C, Lihrmann I, Scalbert E, Malagon M, Vaudry H, Tonon MC, Gandolfo P. Biochemical and functional characterization of high-affinity urotensin II receptors in rat cortical astrocytes. J Neurochem 2006; 99:582-95. [PMID: 16942596 DOI: 10.1111/j.1471-4159.2006.04130.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [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: 12/01/2022]
Abstract
The urotensin II (UII) gene is primarily expressed in the central nervous system, but the functions of UII in the brain remain elusive. Here, we show that cultured rat astrocytes constitutively express the UII receptor (UT). Saturation and competition experiments performed with iodinated rat UII ([(125)I]rUII) revealed the presence of high- and low-affinity binding sites on astrocytes. Human UII (hUII) and the two highly active agonists hUII(4-11) and [3-iodo-Tyr9]hUII(4-11) were also very potent in displacing [(125)I]rUII from its binding sites, whereas the non-cyclic analogue [Ser5,10]hUII(4-11) and somatostatin-14 could only displace [(125)I]rUII binding at micromolar concentrations. Reciprocally, rUII failed to compete with [(125)I-Tyr0,D-Trp8]somatostatin-14 binding on astrocytes. Exposure of cultured astrocytes to rUII stimulated [(3)H]inositol incorporation and increased intracellular Ca(2+) concentration in a dose-dependent manner. The stimulatory effect of rUII on polyphosphoinositide turnover was abolished by the phospholipase C inhibitor U73122, but only reduced by 56% by pertussis toxin. The GTP analogue Gpp(NH)p caused its own biphasic displacement of [(125)I]rUII binding and provoked an affinity shift of the competition curve of rUII. Pertussis toxin shifted the competition curve towards a single lower affinity state. Taken together, these data demonstrate that rat astrocytes express high- and low-affinity UII binding sites coupled to G proteins, the high-affinity receptor exhibiting the same pharmacological and functional characteristics as UT.
Collapse
Affiliation(s)
- Hélène Castel
- INSERM, Laboratory of Cellular and Molecular Neuroendocrinology, European Institute for Peptide Research, University of Rouen, Mont-Saint-Aignan, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Jauneau AC, Ischenko A, Chatagner A, Benard M, Chan P, Schouft MT, Patte C, Vaudry H, Fontaine M. Interleukin-1beta and anaphylatoxins exert a synergistic effect on NGF expression by astrocytes. J Neuroinflammation 2006; 3:8. [PMID: 16594997 PMCID: PMC1482689 DOI: 10.1186/1742-2094-3-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2005] [Accepted: 04/04/2006] [Indexed: 12/16/2022] Open
Abstract
C3a and C5a anaphylatoxins are proinflammatory polypeptides released during complement activation. They exert their biological activities through interaction with two G protein-coupled receptors named C3aR and C5aR, respectively. In the brain, these receptors are expressed on glial cells, and some recent data have suggested that anaphylatoxins could mediate neuroprotection. In this study, we used RT-PCR and ribonuclease protection assays (RPA) to investigate the role of anaphylatoxins on neurotrophin expression by the human glioblastoma cell line T98G and by rat astrocytes. Our data show that for both cell types, anaphylatoxins upregulate expression of NGF mRNA. This response depended on a G protein-coupled pathway since pre-treatment of cells with pertussis toxin (PTX) completely blocked NGF mRNA increases. This effect was anaphylatoxin-specific since pre-incubation with anti-C3a or anti-C5aR antibodies abolished the effects of C3a and C5a, respectively. The regulation of NGF mRNA by anaphylatoxins was not accompanied by translation into protein expression, but there was a significant synergic effect of anaphylatoxins/IL-1b costimulation. Our demonstration of involvement of anaphylatoxins in the NGF release process by astrocytes suggests that C3a and C5a could modulate neuronal survival in the CNS.
Collapse
Affiliation(s)
- Anne-christine Jauneau
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| | - Alexander Ischenko
- Research Institute of Highly Pure Biopreparations, St Petersburg, Russia
| | - Alexandra Chatagner
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| | - Magalie Benard
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| | - Philippe Chan
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| | - Marie-therese Schouft
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| | - Christine Patte
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| | - Hubert Vaudry
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| | - Marc Fontaine
- Institut Fédératif de Recherche Multidisciplinaire sur les Peptides n°23, INSERM U413, Faculté des Sciences, 76130 Mont-St-Aignan, France
| |
Collapse
|
43
|
Jamali S, Bartolomei F, Robaglia-Schlupp A, Massacrier A, Peragut JC, Régis J, Dufour H, Ravid R, Roll P, Pereira S, Royer B, Roeckel-Trevisiol N, Fontaine M, Guye M, Boucraut J, Chauvel P, Cau P, Szepetowski P. Large-scale expression study of human mesial temporal lobe epilepsy: evidence for dysregulation of the neurotransmission and complement systems in the entorhinal cortex. ACTA ACUST UNITED AC 2006; 129:625-41. [PMID: 16399808 DOI: 10.1093/brain/awl001] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.4] [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: 11/12/2022]
Abstract
Human mesial temporal lobe epilepsies (MTLE) are the most frequent form of partial epilepsies and display frequent pharmacoresistance. The molecular alterations underlying human MTLE remain poorly understood. A two-step transcriptional analysis consisting in cDNA microarray experiments followed by quantitative RT-PCR validations was performed. Because the entorhinal cortex (EC) plays an important role in the pathophysiology of the MTLE and usually discloses no detectable or little cell loss, resected EC and each corresponding lateral temporal neocortex (LTC) of MTLE patients were used as the source of disease-associated and control RNAs, respectively. Six genes encoding (i) a serotonin receptor (HTR2A) and a neuropeptide Y receptor type 1 (NPY1R), (ii) a protein (FHL2) associating with the KCNE1 (minK) potassium channel subunit and with presenilin-2 and (iii) three immune system-related proteins (C3, HLA-DR-gamma and CD99), were found consistently downregulated or upregulated in the EC of MTLE patients as compared with non-epileptic autopsy controls. Quantitative western blot analyses confirmed decreased expression of NPY1R in all eight MTLE patients tested. Immunohistochemistry experiments revealed the existence of a perivascular infiltration of C3 positive leucocytes and/or detected membrane attack complexes on a subset of neurons, within the EC of nine out of eleven MTLE patients. To summarize, a large-scale microarray expression study on the EC of MTLE patients led to the identification of six candidate genes for human MTLE pathophysiology. Altered expression of NPY1R and C3 was also demonstrated at the protein level. Overall, our data indicate that local dysregulation of the neurotransmission and complement systems in the EC is a frequent event in human MTLE.
Collapse
Affiliation(s)
- Sarah Jamali
- INSERM UMR 491, Université de la Méditerranée, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Falluel-Morel A, Vaudry D, Aubert N, Galas L, Bernard M, Basille M, Fontaine M, Fournier A, Vaudry H, Gonzales BJ. [Effects of PACAP and C2-ceramide on motility of cerebellar granule neurons: the fastest is not the farthest]. Med Sci (Paris) 2005; 21:696-8. [PMID: 16115451 DOI: 10.1051/medsci/2005218-9696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Anthony Falluel-Morel
- Institut Fédératif de Recherches Multidisciplinaires sur les Peptides (IFRMP 23), Laboratoire de Neuroendocrinologie Cellulaire et Moléculaire, INSERM U.413, Université de Rouen, 76821 Mont-Saint-Aignan, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Falluel-Morel A, Vaudry D, Aubert N, Galas L, Benard M, Basille M, Fontaine M, Fournier A, Vaudry H, Gonzalez BJ. Pituitary adenylate cyclase-activating polypeptide prevents the effects of ceramides on migration, neurite outgrowth, and cytoskeleton remodeling. Proc Natl Acad Sci U S A 2005; 102:2637-42. [PMID: 15695581 PMCID: PMC549011 DOI: 10.1073/pnas.0409681102] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [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: 11/05/2004] [Indexed: 01/29/2023] Open
Abstract
During neuronal migration, cells that do not reach their normal destination or fail to establish proper connections are eliminated through an apoptotic process. Recent studies have shown that the proinflammatory cytokine tumor necrosis factor alpha (and its second messengers ceramides) and the neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) play a pivotal role in the histogenesis of the cerebellar cortex. However, the effects of ceramides and PACAP on migration of cerebellar granule cells have never been investigated. Time-lapse videomicroscopy recording showed that C2-ceramide, a cell-permeable ceramide analog, and PACAP induced opposite effects on cell motility and neurite outgrowth. C2-ceramide markedly stimulated cell movements during the first hours of treatment and inhibited neuritogenesis, whereas PACAP reduced cell migration and promoted neurite outgrowth. These actions of C2-ceramide on cell motility and neurite outgrowth were accompanied by a disorganization of the actin filament network, depolarization of tubulin, and alteration of the microtubule-associated protein Tau. In contrast, PACAP strengthened the polarization of actin at the emergence cone, increased Tau phosphorylation, and abolished C2-ceramide-evoked alterations of the cytoskeletal architecture. The caspase-inhibitor Z-VAD-FMK, like PACAP, suppressed the "dance of the death" provoked by C2-ceramide. Finally, Z-VAD-FMK and the PP2A inhibitor okadaic acid both prevented the impairment of Tau phosphorylation induced by C2-ceramide. Taken together, these data indicate that the reverse actions of C2-ceramide and PACAP on cerebellar granule cell motility and neurite outgrowth are attributable to their opposite effects on actin distribution, tubulin polymerization, and Tau phosphorylation.
Collapse
Affiliation(s)
- Anthony Falluel-Morel
- European Institute for Peptide Research (Institut Fédératif de Recherches Multidisciplinares sur les Peptides 23), Institut National de la Santé et de la Recherche Médicale U413, University of Rouen, 76821 Mont-Saint-Aignan, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Falluel-Morel A, Aubert N, Vaudry D, Basille M, Fontaine M, Fournier A, Vaudry H, Gonzalez BJ. Opposite regulation of the mitochondrial apoptotic pathway by C2-ceramide and PACAP through a MAP-kinase-dependent mechanism in cerebellar granule cells. J Neurochem 2005; 91:1231-43. [PMID: 15569266 DOI: 10.1111/j.1471-4159.2004.02810.x] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.4] [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: 01/15/2023]
Abstract
The sphingomyelin-derived messenger ceramides provoke neuronal apoptosis through caspase-3 activation, while the neuropeptide pituitary adenylate cyclase-activating polypeptide (PACAP) promotes neuronal survival and inhibits caspase-3 activity. However, the mechanisms leading to the opposite regulation of caspase-3 by C2-ceramide and PACAP are currently unknown. Here, we show that PACAP prevents C2-ceramide-induced inhibition of mitochondrial potential and C2-ceramide-evoked cytochrome c release. C2-ceramide stimulated Bax expression, but had no effect on Bcl-2, while PACAP abrogated the action of C2-ceramide on Bax and stimulated Bcl-2 expression. The effects of C2-ceramide and PACAP on Bax and Bcl-2 were blocked, respectively, by the JNK inhibitor L-JNKI1 and the MEK inhibitor U0126. L-JNKI1 prevented the alteration of mitochondria induced by C2-ceramide while U0126 suppressed the protective effect of PACAP against the deleterious action of C2-ceramide on mitochondrial potential. Moreover, L-JNKI1 inhibited the stimulatory effect of C2-ceramide on caspase-9 and -3 and prevented C2-ceramide-induced cell death. U0126 blocked PACAP-induced Bcl-2 expression, abrogated the inhibitory effect of PACAP on ceramide-induced caspase-9 activity, and promoted granule cell death. The present study reveals that C2-ceramide and PACAP exert opposite effects on Bax and Bcl-2 through, respectively, JNK- and ERK-dependent mechanisms. These data indicate that the mitochondrial pathway plays a pivotal role in the pro- and anti-apoptotic effects of C2-ceramide and PACAP.
Collapse
Affiliation(s)
- Anthony Falluel-Morel
- European Institute for Peptide Research (IFRMP 23), Laboratory of Cellular and Molecular Neuroendocrinology, University of Rouen, Mont-Saint-Aignan, France
| | | | | | | | | | | | | | | |
Collapse
|
47
|
Daveau M, Benard M, Scotte M, Schouft MT, Hiron M, Francois A, Salier JP, Fontaine M. Expression of a functional C5a receptor in regenerating hepatocytes and its involvement in a proliferative signaling pathway in rat. J Immunol 2004; 173:3418-24. [PMID: 15322206 DOI: 10.4049/jimmunol.173.5.3418] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Activation of the complement system generates the anaphylatoxin C5a whose activities are mediated through its binding to the widely expressed C5aR. C5aR mRNA and protein expressions are known to be induced in rat hepatocytes under inflammatory conditions. However, little is known about the role of the C5a/C5aR complex in liver and its involvement during a proliferative process. We have evaluated the expression of C5aR in regenerating rat hepatocytes following a partial hepatectomy and in hepatocyte cultures. C5aR induction was observed in hepatocytes from regenerating liver, as well as in normal hepatocytes under a culture-induced stress. The effect of a stimulation by a C5a agonist upon the synthesis of a growth factor/receptor pair (hepatocyte growth factor/c-Met) was also evaluated. Our data demonstrated an up-regulated expression of hepatocyte growth factor and c-Met mRNAs, but we failed to observe a direct mitogenic effect of C5a in culture. However, a significantly increased expression of cyclin E and D1mRNA levels, as well as an increased BrdU incorporation, were observed in rats given an i.v. C5a agonist injection following an 80% partial hepatectomy. These studies demonstrate for the first time that: 1) C5aR is up-regulated during liver regeneration, 2) the binding of C5a to C5aR promotes a growth response, and 3) C5aR is involved in a cell cycle signaling pathway. Taken together, these findings point to a novel role for the hepatic C5aR implicating this complement system in the context of normal or abnormal proliferative pathways.
Collapse
Affiliation(s)
- Maryvonne Daveau
- Institut National de la Santé et de la Recherche Médicale, Unit 519, Faculté de Médecine-Pharmacie, Rouen, France
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Bénard M, Gonzalez BJ, Schouft MT, Falluel-Morel A, Vaudry D, Chan P, Vaudry H, Fontaine M. Characterization of C3a and C5a receptors in rat cerebellar granule neurons during maturation. Neuroprotective effect of C5a against apoptotic cell death. J Biol Chem 2004; 279:43487-96. [PMID: 15292245 DOI: 10.1074/jbc.m404124200] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.0] [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: 12/16/2022] Open
Abstract
There is now clear evidence that the Complement anaphylatoxin C3a and C5a receptors (C3aR and C5aR) are expressed in glial cells, notably in astrocytes and microglia. In contrast, very few data are available concerning the possible expression of these receptors in neurons. Here, we show that transient expression of C3aR and C5aR occurs in cerebellar granule neurons in vivo with a maximal density in 12-day-old rat, suggesting a role of these receptors during development of the cerebellum. Expression of C3aR and C5aR mRNAs and proteins was also observed in vitro in cultured cerebellar granule cells. Quantification of the mRNAs by real-time reverse transcription-PCR showed a peak of expression at day 2 in vitro (DIV 2); the C3aR and C5aR proteins were detected by Western blot analysis at DIV 4 and by flow cytometry and immunocytochemistry in differentiating neurons with a maximum density at DIV 4-9. Apoptosis of granule cells plays a crucial role for the harmonious development of the cerebellar cortex. We found that, in cultured granule neurons in which apoptosis was induced by serum deprivation and low potassium concentration, a C5aR agonist promoted cell survival and inhibited caspase-3 activation and DNA fragmentation. The neuroprotective effect of the C5aR agonist was associated with a marked inhibition of caspase-9 activity and partial restoration of mitochondrial integrity. Our results provide the first evidence that C3aR and C5aR are both expressed in cerebellar granule cells during development and that C5a, but not C3a, is a potent inhibitor of apoptotic cell death in cultured granule neurons.
Collapse
Affiliation(s)
- Magalie Bénard
- European Institute for Peptide Research (IFRMP 23), INSERM U519, University of Rouen, 76183, France.
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Vaudry D, Falluel-Morel A, Basille M, Pamantung TF, Fontaine M, Fournier A, Vaudry H, Gonzalez BJ. Pituitary adenylate cyclase-activating polypeptide prevents C2-ceramide-induced apoptosis of cerebellar granule cells. J Neurosci Res 2003; 72:303-16. [PMID: 12692897 DOI: 10.1002/jnr.10530] [Citation(s) in RCA: 80] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The sphingolipid metabolites, ceramides, are critical mediators of the cellular stress response and play an important role in the control of programmed cell death. In particular, ceramides have been shown to induce apoptosis of cerebellar granule cells. We show that pituitary adenylate cyclase-activating polypeptide (PACAP) prevents C2-ceramide-induced apoptosis. The neuroprotective effect of PACAP was dose-dependent and blocked by its antagonist, PACAP6-38, whereas the PACAP-related peptide VIP was inactive. The effect of PACAP on cell survival was mimicked by dibutyryl-cAMP (dbcAMP) and forskolin and prevented by the MEK inhibitor U0126, indicating that both the adenylyl-cyclase and MAP-kinase pathways contribute to the neuroprotective action of the peptide. C2-ceramide and PACAP induced opposite effects on phosphorylated forms of ERK and JNK without affecting the total amounts of ERK and JNK, suggesting that a balance between these two MAP-kinases is critical for the cell survival/death decision. The effect of PACAP on ERK phosphorylation was blocked by U0126, but was not affected by H89 or chelerythrine indicating that PACAP activates ERK through a PKA- and PKC-independent mechanism. C2-ceramide induced a time-dependent activation of caspase-3, enhanced the amount of cleaved caspase-3 and stimulated the DNA fragmentation process, while PACAP strongly inhibited the C2-ceramide-induced activation of caspase-3, reduced the expression of cleaved caspase-3 and blocked DNA fragmentation. Taken together, the present results show that C2-ceramide induces apoptosis of cerebellar granule cells through a mechanism involving activation of caspase-3. Our data also demonstrate that PACAP is a potent inhibitor of C2-ceramide-induced apoptosis.
Collapse
Affiliation(s)
- David Vaudry
- European Institute for Peptide Research (IFRMP 23), Laboratory of Cellular and Molecular Neuroendocrinology, INSERM U413, UA CNRS, University of Rouen, France.
| | | | | | | | | | | | | | | |
Collapse
|
50
|
Sayah S, Jauneau AC, Patte C, Tonon MC, Vaudry H, Fontaine M. Two different transduction pathways are activated by C3a and C5a anaphylatoxins on astrocytes. Brain Res Mol Brain Res 2003; 112:53-60. [PMID: 12670702 DOI: 10.1016/s0169-328x(03)00046-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
C3a and C5a anaphylatoxins are two proinflammatory peptides generated during complement system activation. C3a and C5a exert several biological activities through binding to their specific receptors, named C3aR and C5aR, respectively. We have previously shown that C3aR and C5aR are constitutively expressed by astrocytes, a cell type that actively participates in inflammatory events in the central nervous system. In this article, we focus on the transduction signal pathways activated by these two receptors on astrocytes. We show that the stimulation of C3aR or C5aR results in the activation of the mitogen activated protein kinase pathway by phosphorylation of the p44 and p42 kinases. On the contrary, the binding of C3a or C5a to their receptors on astrocytes decreases the production of cAMP, revealing an inhibition of the adenylyl cyclase pathway. Stimulation of C3aR and C5aR induces an increase in intracellular calcium concentration, arising from the opening of intracellular calcium channels. The observed calcium wave results from the activation of the phospholipase C pathway. Taken together, our results suggest that the binding of C3a or C5a to their receptors on astrocytes would be of functional importance since it induces the activation of two important transduction pathways leading to several cellular events such as neurotrophin and cytokine production.
Collapse
Affiliation(s)
- S Sayah
- INSERM U519, Faculté Mixte de Médecine et Pharmacie, 22 Bld. Gambetta, 76183, Cedex, Rouen, France
| | | | | | | | | | | |
Collapse
|