1
|
Mansvelt B, Bertrand C, Versaille H, Nokerman P, Etienne P, Roden ADND. Systematic Use of Total Vascular Exclusion in 14 Elective Hepatic Resections. Acta Chir Belg 2020. [DOI: 10.1080/00015458.1999.12098469] [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] [Indexed: 01/12/2023]
Affiliation(s)
- B. Mansvelt
- Departments of digestive surgery, Hôpital de Jolimont, Haine Saint Paul, Belgium
| | - Cl. Bertrand
- Departments of digestive surgery, Hôpital de Jolimont, Haine Saint Paul, Belgium
| | - H. Versaille
- Departments of anesthesiology, Hôpital de Jolimont, Haine Saint Paul, Belgium
| | - P. Nokerman
- Departments of anesthesiology, Hôpital de Jolimont, Haine Saint Paul, Belgium
| | - P. Etienne
- Departments of digestive surgery, Hôpital de Jolimont, Haine Saint Paul, Belgium
| | - A. de Neve de Roden
- Departments of digestive surgery, Hôpital de Jolimont, Haine Saint Paul, Belgium
| |
Collapse
|
2
|
Coutens B, Rekik K, Harster A, Etienne P, Noirot V, Frances B, Moulédous L, Guiard BP. A Citrus Based Sensory Functional Food Ingredient Induces Antidepressant-like Effects: Possible Involvement of an Interplay between the Olfactory and the Serotonergic Systems. Neuroscience 2020; 451:149-163. [PMID: 33039523 DOI: 10.1016/j.neuroscience.2020.09.040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 03/24/2020] [Revised: 09/17/2020] [Accepted: 09/20/2020] [Indexed: 12/28/2022]
Abstract
In the present study, we examined the neurobehavioral effects of a sensory functional food ingredient mainly based on Citrus sinensis extracts (D11399) using a battery of tests recapitulating various endophenotypes of depression such as anxiety in the open field (OF), the elevated plus-maze (EPM), and the novelty suppressed feeding (NSF), self-care in the splash test (ST), despair in the forced swimming task (FST) but also anhedonia in the sucrose preference test (SPT) in mice. A one-week oral administration of D11399 promoted anxiolytic- and antidepressant-like responses in naïve mice subjected to the NSF and FST. In a marked contrast, the administration of D11399 by oral gavage or the inhibition of olfaction by methimazole prevented such beneficial effects. We further investigated the neurobehavioral properties of a ten-week oral administration of D11399 in the corticosterone (CORT) mouse model of depression. Interestingly, D11399 also elicited anxiolytic- and antidepressant-like effects in various paradigms. To characterize the putative underpinning neurobiological mechanisms in CORT mice, we investigated whether cellular and molecular processes commonly associated with antidepressant responses such as monoaminergic neurotransmission and neuronal maturation in the hippocampus were impacted. Although D11399 did not modify the hippocampal extracellular levels of monoamines (i.e. serotonin and norepinephrine), it reversed the ability of CORT to decrease serotonin neurons firing rate in the dorsal raphe and neuronal maturation in the hippocampus. These findings suggest that the anxiolytic- and antidepressant-like effects of this sensory functional food ingredient are closely related with olfaction and likely a concomitant change in the activity of the central serotonergic system. Further experiments are warranted to precise the neuronal circuits linking sensorial and emotional modalities and identify innovative therapeutic strategies aimed to relieve depressive endophenotypes.
Collapse
Affiliation(s)
- B Coutens
- Centre de Recherches sur la Cognition Animale, Centre de Biologie Intégrative, Université de Toulouse, CNRS, UPS, France
| | - K Rekik
- Centre de Recherches sur la Cognition Animale, Centre de Biologie Intégrative, Université de Toulouse, CNRS, UPS, France
| | - A Harster
- Centre de Recherches sur la Cognition Animale, Centre de Biologie Intégrative, Université de Toulouse, CNRS, UPS, France
| | | | | | - B Frances
- Centre de Recherches sur la Cognition Animale, Centre de Biologie Intégrative, Université de Toulouse, CNRS, UPS, France
| | - L Moulédous
- Centre de Recherches sur la Cognition Animale, Centre de Biologie Intégrative, Université de Toulouse, CNRS, UPS, France
| | - B P Guiard
- Centre de Recherches sur la Cognition Animale, Centre de Biologie Intégrative, Université de Toulouse, CNRS, UPS, France; Faculté de Pharmacie, Université Paris Sud, Université Paris-Saclay, 92290 Chatenay-Malabry, France.
| |
Collapse
|
3
|
Chaumont H, Etienne P, Roze E, Couratier C, Roger PM, Lannuzel A. Acute meningoencephalitis in a patient with COVID-19. Rev Neurol (Paris) 2020; 176:519-521. [PMID: 32414534 PMCID: PMC7211749 DOI: 10.1016/j.neurol.2020.04.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 04/29/2020] [Accepted: 04/29/2020] [Indexed: 12/18/2022]
Affiliation(s)
- H Chaumont
- Centre Hospitalier Universitaire de la Guadeloupe, Service de Neurologie, Pointe-à-Pitre/Abymes, France; Faculté de Médecine de l'université des Antilles, Pointe-à-Pitre, France; Faculté de Médecine de Sorbonne Université, Institut National de la Santé et de la Recherche Médicale, U 1127, CNRS, Unité Mixte de Recherche (UMR) 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.
| | - P Etienne
- Centre Hospitalier Universitaire de la Guadeloupe, Unité d'Hospitalisation de Courte Durée, Pointe-à-Pitre/Abymes, France
| | - E Roze
- Faculté de Médecine de Sorbonne Université, Institut National de la Santé et de la Recherche Médicale, U 1127, CNRS, Unité Mixte de Recherche (UMR) 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Neurologie, Paris, France
| | - C Couratier
- Centre Hospitalier Universitaire de la Guadeloupe, Service de Neurologie, Pointe-à-Pitre/Abymes, France
| | - P-M Roger
- Centre Hospitalier Universitaire de la Guadeloupe, Service d'Infectiologie, Pointe-à-Pitre/Abymes, France
| | - A Lannuzel
- Centre Hospitalier Universitaire de la Guadeloupe, Service de Neurologie, Pointe-à-Pitre/Abymes, France; Faculté de Médecine de l'université des Antilles, Pointe-à-Pitre, France; Faculté de Médecine de Sorbonne Université, Institut National de la Santé et de la Recherche Médicale, U 1127, CNRS, Unité Mixte de Recherche (UMR) 7225, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France; Centre d'investigation Clinique Antilles Guyane, Inserm CIC 1424, Pointe-à-Pitre, France
| |
Collapse
|
4
|
Roger PM, Michélangeli C, Girard D, Etienne P, Borredon G, Dautezac V, Keita-Perse O, Del Giudice P. Streamlined guidelines for antibiotic therapies are required for greater efficacy. Med Mal Infect 2019; 49:363-366. [PMID: 30826173 DOI: 10.1016/j.medmal.2019.02.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 02/04/2019] [Indexed: 01/26/2023]
Affiliation(s)
- P M Roger
- Infectiologie, groupe Elsan, 75008 Paris, France; Faculté de médecine, université Côte-d'Azur, 06000 Nice, France; Reso-Infectio-PACA-Est (reso-infectio.fr), 06000 Nice, France.
| | - C Michélangeli
- Reso-Infectio-PACA-Est (reso-infectio.fr), 06000 Nice, France; Infectiologie, centre hospitalier universitaire de Nice, 06000 Nice, France
| | - D Girard
- Reso-Infectio-PACA-Est (reso-infectio.fr), 06000 Nice, France; Laboratoire Cerballiance, 83190 Ollioules, France
| | - P Etienne
- Reso-Infectio-PACA-Est (reso-infectio.fr), 06000 Nice, France; Centre de lutte contre la tuberculose, centre hospitalier universitaire de Nice, 06000 Nice, France
| | - G Borredon
- Pharmacie, clinique Ormeau, 65000 Tarbes, France
| | - V Dautezac
- Pharmacie, clinique du Sidobre, 81100 Castres, France
| | - O Keita-Perse
- Reso-Infectio-PACA-Est (reso-infectio.fr), 06000 Nice, France; Service d'hygiène hospitalière, hôpital Princesse-Grâce, 98000 Monaco
| | - P Del Giudice
- Reso-Infectio-PACA-Est (reso-infectio.fr), 06000 Nice, France; Dermatologie et infectiologie, hôpital de Fréjus-St-Raphael, 83608 Fréjus, France
| |
Collapse
|
5
|
Etienne P, Klug D, Babuty D, Jesel L, Dupuis JM, Defaye P, Maury P, Pasquie JL, Le Franc P, Milhem A, Anselme F, Mansourati J, Bordachar P, Mabo P, Probst V. P2865GENECHOC study: a study designed to identify the genetic variants involved in appropriate shock in primary prevention; clinical description of the patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2865] [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] [Indexed: 11/14/2022] Open
Affiliation(s)
- P Etienne
- University Hospital of Nantes - Hospital Guillaume & Rene Laennec, Nantes, France
| | - D Klug
- Cardiology Hospital of Lille, Lille, France
| | - D Babuty
- University Hospital of Tours, Tours, France
| | - L Jesel
- University Hospital of Strasbourg, Strasbourg, France
| | - J M Dupuis
- University Hospital of Angers, Angers, France
| | - P Defaye
- University Hospital of Grenoble, Grenoble, France
| | - P Maury
- University Hospital of Toulouse, Toulouse, France
| | - J L Pasquie
- University Hospital of Montpellier, Montpellier, France
| | | | - A Milhem
- University Hospital of La Rochelle, La Rochelle, France
| | - F Anselme
- University Hospital of Rouen, Rouen, France
| | | | - P Bordachar
- University Hospital of Bordeaux - Hospital Haut Leveque, Departement of Cardiology, Bordeaux-Pessac, France
| | - P Mabo
- University Hospital of Rennes, Rennes, France
| | - V Probst
- University Hospital of Nantes - Hospital Guillaume & Rene Laennec, Nantes, France
| |
Collapse
|
6
|
Allaoua M, Etienne P, Noirot V, Carayon JL, Téné N, Bonnafé E, Treilhou M. Pharmacokinetic and antimicrobial activity of a new carvacrol-based product against a human pathogen, Campylobacter jejuni. J Appl Microbiol 2018; 125:1162-1174. [PMID: 29770558 DOI: 10.1111/jam.13915] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 08/21/2017] [Revised: 04/06/2018] [Accepted: 05/06/2018] [Indexed: 12/13/2022]
Abstract
AIM In vitro and in vivo studies were conducted to test a new carvacrol-based product designed to delay the carvacrol release so that it could reach the caeca of broiler chickens in order to control Campylobacter jejuni. METHODS AND RESULTS Antimicrobial activity of carvacrol, a constituent of oregano and thyme essential oil, has been demonstrated against C. jejuni in vitro, and this compound was found beneficial for broiler growth. Here, we tested a new liquid formulation that did not change the antibacterial efficacy of carvacrol against C. jejuni in vitro, as assessed by broth microdilution. The mode of action of carvacrol also remained unchanged as illustrated by electronic microscopy. A pharmacokinetic assay monitored carvacrol of the solid galenic formulation in the avian digestive tract and this showed that this compound was mainly found in the last part (caeca, large intestine) and in the droppings. Extremely low concentrations of free carvacrol were present in blood plasma, with larger amounts of carvacrol metabolites: carvacrol glucuronide and sulphate. A qPCR analysis showed that the solid galenic form of carvacrol added at 5 kg per tonne of food (i.e. 9·5 mg of carvacrol per kg of bodyweight per day) significantly decreased the C. jejuni caecal load by 1·5 log. CONCLUSIONS The new liquid formulation was as effective as unformulated carvacrol in vitro. In vivo the solid galenic form seems to delay the carvacrol release into the caeca and presented interesting results on C. jejuni load after 35 days. SIGNIFICANCE AND IMPACT OF THE STUDY Results suggested that this product could be promising to control Campylobacter contamination of broilers.
Collapse
Affiliation(s)
| | | | | | - J-L Carayon
- Biochimie et Toxicologie des Substances Biologiques, BTSB, Université de Toulouse, INU Champollion, Albi, France
| | - N Téné
- Biochimie et Toxicologie des Substances Biologiques, BTSB, Université de Toulouse, INU Champollion, Albi, France
| | - E Bonnafé
- Biochimie et Toxicologie des Substances Biologiques, BTSB, Université de Toulouse, INU Champollion, Albi, France
| | - M Treilhou
- Biochimie et Toxicologie des Substances Biologiques, BTSB, Université de Toulouse, INU Champollion, Albi, France
| |
Collapse
|
7
|
Azria D, Doyen J, Jarlier M, Martel-Lafay I, Hennequin C, Etienne P, Vendrely V, François E, de La Roche G, Bouché O, Mirabel X, Denis B, Mineur L, Berdah J, Mahé M, Bécouarn Y, Dupuis O, Lledo G, Seitz J, Bedenne L, Gourgou-Bourgade S, Juzyna B, Conroy T, Gérard J. Late toxicities and clinical outcome at 5 years of the ACCORD 12/0405-PRODIGE 02 trial comparing two neoadjuvant chemoradiotherapy regimens for intermediate-risk rectal cancer. Ann Oncol 2018; 28:2436-2442. [PMID: 28961836 DOI: 10.1093/annonc/mdx351] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Background Outcome of intermediate risk rectal cancer may be improved by the addition of oxaliplatin during 5-fluoruracil concomitant neoadjuvant chemoradiotherapy. The purpose of this study is to analyze the main clinical results of the ACCORD12 trial (NCT00227747) in rectal cancer after 5 years of follow-up. Patients and methods Inclusion criteria were as follows: rectal adenocarcinoma accessible to digital examination staged T3-T4 Nx M0 (or T2 Nx distal anterior rectum). Two neoadjuvant chemoradiotherapy regimens were randomized: CAP45 (RT 45 Gy + capecitabine) and CAPOX50 (RT 50 Gy + capecitabine and oxaliplatin). Main end point was sterilization of the operative specimen. Acute and late toxicities were prospectively analyzed with dedicated questionnaires. Results Between November 2005 and July 2008, 598 patients were included in the trial. After a median follow-up of 60.2 months, there was no difference between treatment arms in multivariate analysis either for disease-free survival or overall survival (OS) [P = 0.9, hazard ratio (HR)=1.02; 95% confidence interval (CI), 0.76-1.36 and P = 0.3, HR = 0.87; 95% CI, 0.66-1.15, respectively]. There was also no difference of local control in univariate analysis (P = 0.7, HR = 0.92; 95% CI, 0.51-1.66). Late toxicities were acceptable with 1.6% G3 anal incontinence, and <1% G3 diarrhea, G3 rectal bleeding, G3 stenosis, G3-4 pain, G3 urinary incontinence, G3 urinary retention and G3 skeletal toxicity. There was a slight increase of erectile dysfunction over time with a 63% rate of erectile dysfunction at 5 years. There was no significant statistical difference for these toxicities between treatment arms. Conclusions The CAPOX50 regimen did not improve local control, disease-free survival and overall survival in the ACCORD12 trial. Late toxicities did not differ between treatment arms.
Collapse
Affiliation(s)
- D Azria
- Department of Radiation oncology, Montpellier Cancer Institute, Montpellier
| | - J Doyen
- Department of Radiation oncology, Antoine-Lacassagne Center, Nice;; University of Côte d'Azur, Nice;.
| | - M Jarlier
- Biometrics Unit, Montpellier Cancer Institute, Montpellier
| | - I Martel-Lafay
- Department of Radiation Oncology, Léon-Bérard Center, Lyon
| | - C Hennequin
- Department of Radiation Oncology, Saint-Louis Hospital, Paris
| | - P Etienne
- Department of Radiation Oncology, Armorican Center of Radiotherapy and Radiology, Plérin
| | - V Vendrely
- Department of Radiation Oncology, Teaching Hospital CHU of Bordeaux, Bordeaux
| | - E François
- University of Côte d'Azur, Nice;; Department of Medical Oncology, Antoine-Lacassagne Center, Nice
| | - G de La Roche
- Department of Medical Oncology, Oncology Institute of Loire, Saint Priest en Jarez
| | - O Bouché
- Department of Medical Oncology, Teaching Hospital CHU of Reims, Reims
| | - X Mirabel
- Department of Radiation Oncology, Oscar-Lambret Center, Lille
| | - B Denis
- Department of Medical Oncology, Teaching Hospital CHU Louis Pasteur, Colmar
| | - L Mineur
- Department of Radiation Oncology, Sainte-Catherine Institute, Avignon
| | - J Berdah
- Sainte-Marguerite Private Hospital, Toulon-Hyères
| | - M Mahé
- Department of Radiation Oncology, West Oncology Institute, Saint-Herblain
| | - Y Bécouarn
- Department of Medical Oncology, Institut Bergonié, Bordeaux
| | - O Dupuis
- Department of Medical Oncology, Jean Bernard Center, Le Mans
| | - G Lledo
- Department of Medical Oncology, Jean Mermoz Private Hospital, Lyon
| | - J Seitz
- Department of Medical Oncology, Teaching Hospital CHU La Timone, Marseille
| | - L Bedenne
- Department of Medical Oncology, Teaching Hospital CHU of Dijon, Dijon
| | | | | | - T Conroy
- Department of Medical Oncology, Oncology Institute of Lorraine, Vandoeuvre-les-Nancy, France
| | - J Gérard
- Department of Radiation oncology, Antoine-Lacassagne Center, Nice;; University of Côte d'Azur, Nice
| |
Collapse
|
8
|
Etienne P, Klug D, Babuty D, Jesel L, Dupuis J, Defaye P, Maury P, Pasquié J, Le Franc P, Bru P, Anselme F, Bodeva S, Sadoul N, Jean F, Chevalier P, Deharo J, Mansourati J, Bordachar P, Mabo P, Probst V. GENECHOC study: A study designed to identify the genetic variants involved in appropriate shock in primary prevention. Clinical description of the patients. Archives of Cardiovascular Diseases Supplements 2018. [DOI: 10.1016/j.acvdsp.2018.02.051] [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: 11/26/2022]
|
9
|
Al-Obaidi R, Salehi H, Desoutter A, Bonnet L, Etienne P, Terrer E, Jacquot B, Levallois B, Tassery H, Cuisinier FJG. Chemical & Nano-mechanical Study of Artificial Human Enamel Subsurface Lesions. Sci Rep 2018; 8:4047. [PMID: 29511281 PMCID: PMC5840409 DOI: 10.1038/s41598-018-22459-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 11/08/2017] [Accepted: 02/22/2018] [Indexed: 11/23/2022] Open
Abstract
White lesions represent an early phase of caries formation. 20 human sound premolars were subjected to pH cycling procedure to induce subsurface lesions (SLs) in vitro. In addition, 2 teeth with naturally developed white spot lesions (WSLs) were used as references. All specimens characterized by confocal Raman microscopy being used for the first time in examining white & subsurface lesions and providing a high resolution chemical and morphological map based on phosphate peak intensity alterations at 960 cm-1. Nanoindentation technique was used to measure Hardness (H) and Young's modulus (E) of enamel. Phosphate map of examined samples exhibited presence of intact surface layer (ISL) followed by severe depletion in (PO43-) peak in the area corresponding to the body of the lesion. In all examined groups, the mechanical properties of enamel were decreased in lesion area and found to be inversely related to penetration depth of indenter owing to enamel hierarchical structure. By combining the above two techniques, we linked mechanical properties of enamel to its chemical composition and ensured that the two methods are highly sensitive to detect small changes in enamel composition. Further work is required to bring these two excellent tools to clinical application to perceive carious lesions at an early stage of development.
Collapse
Affiliation(s)
- R Al-Obaidi
- LBN, Univ. Montpellier, Montpellier, France.
| | - H Salehi
- LBN, Univ. Montpellier, Montpellier, France
| | | | - L Bonnet
- Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, Montpellier, FR-34095, France
| | - P Etienne
- Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, Montpellier, FR-34095, France
| | - E Terrer
- LBN, Univ. Montpellier, Montpellier, France
- Aix Marseille University, Marseille, France
| | - B Jacquot
- Aix Marseille University, Marseille, France
| | | | - H Tassery
- LBN, Univ. Montpellier, Montpellier, France
- Aix Marseille University, Marseille, France
| | | |
Collapse
|
10
|
Labonté A, Dea J, Théroux L, Tremblay-Mercier J, Rosa-Neto P, Etienne P, Breitner J, Poirier J. Mapping the progression of vascular CSF biomarkers in pre-symptomatic “at-risk” healthy subjects in the PREVENT-AD program. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1903] [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: 10/18/2022]
|
11
|
Etienne P, Huchet F, Sacher F, Maury P, Mabo P, Derval N, Probst V, Gourraud J. P5511Diagnosis accuracy of provocative test in concealed long QT syndrome. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5511] [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: 11/14/2022] Open
|
12
|
Etienne P, Néri D, Lamèche D, Roger P. Prélèvements bactériologiques aux urgences : organiser leur utilisation ! Med Mal Infect 2017. [DOI: 10.1016/j.medmal.2017.03.129] [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: 11/26/2022]
|
13
|
Etienne P, Huchet F, Sacher F, Maury P, Mabo P, Derval N, Probst V, Gourraud J. Diagnosis accuracy of provocative tests in concealed Long QT Syndrome. Archives of Cardiovascular Diseases Supplements 2017. [DOI: 10.1016/s1878-6480(17)30494-9] [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: 10/19/2022]
|
14
|
Desclos-Théveniau M, Coquet L, Jouenne T, Etienne P. Proteomic analysis of residual proteins in blades and petioles of fallen leaves of Brassica napus. Plant Biol (Stuttg) 2015; 17:408-418. [PMID: 25294336 DOI: 10.1111/plb.12241] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 04/26/2014] [Accepted: 07/04/2014] [Indexed: 06/03/2023]
Abstract
Brassica napus L. is an important crop plant, characterised by high nitrogen (N) levels in fallen leaves, leading to a significant restitution of this element to the soil, with important consequences at the economic and environmental levels. It is now well established that the N in fallen leaves is due to weak N remobilisation that is especially related to incomplete degradation of foliar proteins during leaf senescence. Identification of residual proteins in a fallen leaf (i.e. incompletely degraded in the last step of the N remobilisation process) constitutes important information for improving nutrient use efficiency. Proteome analysis of the vascular system (petioles) and blades from fallen leaves of Brassica napus was performed, and the 30 most abundant residual proteins in each tissue were identified. Among them, several proteins involved in N recycling remain in the leaf after abscission. Moreover, this study reveals that some residual proteins are associated with energy metabolism, protection against oxidative stress, and more surprisingly, photosynthesis. Finally, comparison of blade and petiole proteomes show that, despite their different physiological roles in the non-senescing leaf, both organs redirect their metabolism in order to ensure catabolic reactions. Taken together, the results suggest that a better degradation of these leaf proteins during the senescence process could enable improvements in the N use efficiency of Brassica napus.
Collapse
Affiliation(s)
- M Desclos-Théveniau
- Normandie University, Caen, France; UNICAEN, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Caen, France; INRA, UMR 950 Ecophysiologie Végétale, Agronomie et nutritions N, C, S, Caen, France
| | | | | | | |
Collapse
|
15
|
Clouard C, Etienne P, Noirot V, Champagnac M, Val-Laillet D. P026: Impact d’un arôme fonctionnel, induisant une préférence alimentaire, sur l’activité cérébrale de porcelets exposés ou non depuis le sevrage à ce produit. NUTR CLIN METAB 2014. [DOI: 10.1016/s0985-0562(14)70669-7] [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]
|
16
|
Gerard J, Gourgou-Bourgade S, Azria D, Martel-Laffay I, Hennequin C, Etienne P, Vendrely V, François E, Romestaing P, Conroy T. ACCORD12/0405-Prodige 2 Phase III Trial Neoadjuvant Treatment in Rectal Cancer: Results after 3 Years of Follow-up. Int J Radiat Oncol Biol Phys 2011. [DOI: 10.1016/j.ijrobp.2011.06.005] [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: 11/16/2022]
|
17
|
Morel A, Boisdron M, Metges J, Capitain O, Douillard J, Ramee J, Raoul J, Cumin I, Etienne P, Grude F. 6127 POSTER What About Risk Factors KRAS, BRAF and PI3K in a French Translational Study OMIT of 325 Patients Traited With Cetuximab Based-regimen in Real Practice. Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71772-5] [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: 10/17/2022]
|
18
|
Mitry E, Bouche O, Seitz J, Etienne P, Legoux J, Aparicio T, Breysacher G, Lecaille C, Lecomte T, Jouve J. Phase II trial of chemotherapy with high-dose FOLFIRI plus bevacizumab in the front-line treatment of patients with metastatic colorectal cancer (mCRC) and genotype UGT1A1*1/ UGT1A1*1 or UGT1A1*1/ UGT1A1*28 (FFCD 0504 trial): Final results. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3578] [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: 11/20/2022] Open
|
19
|
Abdallah M, Etienne P, Ourry A, Meuriot F. Do initial S reserves and mineral S availability alter leaf S-N mobilization and leaf senescence in oilseed rape? Plant Sci 2011; 180:511-20. [PMID: 21421399 DOI: 10.1016/j.plantsci.2010.11.008] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 11/15/2010] [Accepted: 11/17/2010] [Indexed: 05/18/2023]
Abstract
Winter oilseed rape is sensitive to S limitation, however few studies have clearly assessed the impact of initial S reserves on the remobilization of leaf N-S compounds and senescence dynamics within the leaves in S limited plants. As a consequence, the impacts of high or low initial S reserves on these parameters, further cross-combined with either high or low S availabilities, were examined using a ¹⁵N and ³⁴S double-labelling method associated with a study of gene expression of relevant tonoplastic sulphate transporters (BnSultr4;1 and BnSultr4;2) and a molecular indicator of leaf senescence (BnSAG12/BnCab). Plants with high initial S status and S limitation showed an optimal growth comparable to control plants. Moreover, in response to S limitation, leaf soluble protein content, total S, recently assimilated S (i.e., ³⁴S) and the sulphate content in the oldest leaves declined, and the expression of genes encoding tonoplastic sulphate transporters were up-regulated. However, compared to control plants, S limitation delayed leaf senescence. These data suggested that in response to S limitation, plants with high initial S were able to sustain optimized leaf growth by increasing endogenous N and S remobilization independently of the leaf senescence process. In contrast, if these low S plants had no initial S reserves, leaf N-S remobilization was not sufficient to allow optimal growth. As a conclusion, our study supports a model where oilseed rape is able to compensate transiently for S limitation through a fine management of leaf N-S remobilization and a delayed leaf senescence dynamics.
Collapse
Affiliation(s)
- M Abdallah
- UMR INRA-UCBN 950, Ecophysiologie Végétale, Agronomie and Nutritions N. C. S. (EVA), INRA, University Caen, F-14032 Caen, France
| | | | | | | |
Collapse
|
20
|
Dubousset L, Etienne P, Avice JC. Is the remobilization of S and N reserves for seed filling of winter oilseed rape modulated by sulphate restrictions occurring at different growth stages? J Exp Bot 2010; 61:4313-24. [PMID: 20693411 PMCID: PMC2955745 DOI: 10.1093/jxb/erq233] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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: 04/03/2010] [Revised: 07/08/2010] [Accepted: 07/09/2010] [Indexed: 05/04/2023]
Abstract
How the remobilization of S and N reserves can meet the needs of seeds of oilseed rape subject to limitation of S fertilization remains largely unclear. Thus, this survey aims to determine the incidence of sulphate restriction [low S (LS)] applied at bolting [growth stage (GS) 32], visible bud (GS 53), and start of pod filling (GS 70) on source-sink relationships for S and N, and on the dynamics of endogenous/exogenous S and N contributing to seed yield and quality. Sulphate restrictions applied at GS 32, GS 53, and GS 70 were annotated LS(32), LS(53), and LS(70). Long-term (34)SO(4)(2-) and (15)NO(3)(-) labelling was used to explore S and N partitioning at the whole-plant level. In LS(53), the sulphur remobilization efficiency (SRE) to seeds increased, but not enough to maintain seed quality. In LS(32), an early S remobilization from leaves provided S for root, stem, and pod growth, but the subsequent demand for seed development was not met adequately and the N utilization efficiency (NUtE) was reduced when compared with high S (HS). The highest SRE (65 ± 1.2% of the remobilized S) associated with an efficient foliar S mobilization (with minimal residual S concentrations of 0.1-0.2% dry matter) was observed under LS(70) treatment, which did not affect yield components.
Collapse
Affiliation(s)
| | | | - J. C. Avice
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie & nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| |
Collapse
|
21
|
Abdallah M, Dubousset L, Meuriot F, Etienne P, Avice JC, Ourry A. Effect of mineral sulphur availability on nitrogen and sulphur uptake and remobilization during the vegetative growth of Brassica napus L. J Exp Bot 2010; 61:2635-46. [PMID: 20403880 PMCID: PMC2882259 DOI: 10.1093/jxb/erq096] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [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: 10/22/2009] [Revised: 03/19/2010] [Accepted: 03/23/2010] [Indexed: 05/18/2023]
Abstract
Because it has a high demand for sulphur (S), oilseed rape is particularly sensitive to S limitation. However, the physiological effects of S limitation remain unclear, especially during the rosette stage. For this reason a study was conducted to determine the effects of mineral S limitation on nitrogen (N) and S uptake and remobilization during vegetative growth of oilseed rape at both the whole-plant and leaf rank level for plants grown during 35 d with 300 microM (34)SO(4)(2-) (control plants; +S) or with 15 microM (34)SO(4)(2-) (S-limited plants; -S). The results highlight that S-limited plants showed no significant differences either in whole-plant and leaf biomass or in N uptake, when compared with control plants. However, total S and (34)S (i.e. deriving from S uptake) contents were greatly reduced for the whole plant and leaf after 35 d, and a greater redistribution of endogenous S from leaves to the benefit of roots was observed. The relative expression of tonoplast and plasmalemma sulphate transporters was also strongly induced in the roots. In conclusion, although S-limited plants had 20 times less mineral S than control plants, their development remained surprisingly unchanged. During S limitation, oilseed rape is able to recycle endogenous S compounds (mostly sulphate) from leaves to roots. However, this physiological adaptation may be effective only over a short time scale (i.e. vegetative growth).
Collapse
Affiliation(s)
| | | | - F. Meuriot
- To whom correspondence should be addresssed. E-mail:
| | | | | | | |
Collapse
|
22
|
Dubousset L, Abdallah M, Desfeux AS, Etienne P, Meuriot F, Hawkesford MJ, Gombert J, Ségura R, Bataillé MP, Rezé S, Bonnefoy J, Ameline AF, Ourry A, Dily FL, Avice JC. Remobilization of leaf S compounds and senescence in response to restricted sulphate supply during the vegetative stage of oilseed rape are affected by mineral N availability. J Exp Bot 2009; 60:3239-53. [PMID: 19553370 PMCID: PMC2718225 DOI: 10.1093/jxb/erp172] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2009] [Revised: 04/21/2009] [Accepted: 04/27/2009] [Indexed: 05/18/2023]
Abstract
The impact of sulphur limitation on the remobilization of endogenous S compounds during the rosette stage of oilseed rape, and the interactions with N availability on these processes, were examined using a long-term (34)SO(4)(2-) labelling method combined with a study of leaf senescence progression (using SAG12/Cab as a molecular indicator) and gene expression of the transporters, BnSultr4;1 and BnSultr4;2, involved in vacuolar sulphate efflux. After 51 d on hydroponic culture at 0.3 mM (34)SO(4)(2-) (1 atom% excess), the labelling was stopped and plants were subject for 28 d to High S-High N (HS-HN, control), Low S-High N (LS-HN) or Low S-Low N (LS-LN) conditions. Compared with the control, LS-HN plants showed delayed leaf senescence and, whilst the shoot growth and the foliar soluble protein amounts were not affected, S, (34)S, and SO(4)(2-) amounts in the old leaves declined rapidly and were associated with the up-regulation of BnSultr4;1. In LS-LN plants, shoot growth was reduced, leaf senescence was accelerated, and the rapid S mobilization in old leaves was accompanied by decreased (34)S and SO(4)(2-), higher protein mobilization, and up-regulation of BnSultr4;2, but without any change of expression of BnSultr4;1. The data suggest that to sustain the S demand for growth under S restriction (i) vacuolar SO(4)(2-) is specifically remobilized in LS-HN conditions without any acceleration of leaf senescence, (ii) SO(4)(2-) mobilization is related to an up-regulation of BnSultr4;1 and/or BnSultr4;2 expression, and (iii) the relationship between sulphate mobilization and up-regulation of expression of BnSultr4 genes is specifically dependent on the N availability.
Collapse
Affiliation(s)
- L. Dubousset
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - M. Abdallah
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - A. S. Desfeux
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - P. Etienne
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - F. Meuriot
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - M. J. Hawkesford
- Plant Science Department, Rothamsted Research, Harpenden, Herts AL5 2JQ, UK
| | - J. Gombert
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - R. Ségura
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - M-P. Bataillé
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - S. Rezé
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - J. Bonnefoy
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - A. F. Ameline
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - A. Ourry
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - F. Le Dily
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| | - J. C. Avice
- INRA, UMR INRA-UCBN 950 Ecophysiologie Végétale, Agronomie et Nutritions NCS, Esplanade de la Paix, F-14032, Caen, France
| |
Collapse
|
23
|
Gerard J, Azria D, Gourgou-Bourgade S, Martel-Laffay I, Hennequin C, Etienne P, Vendrely V, Conroy T, Francois E, Montoto-Grillot C. Randomized multicenter phase III trial comparing two neoadjuvant chemoradiotherapy (CT-RT) regimens (RT45-Cap versus RT50-Capox) in patients (pts) with locally advanced rectal cancer (LARC): Results of the ACCORD 12/0405 PRODIGE 2. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.18_suppl.lba4007] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
LBA4007 Background: Following the results of randomized trials FFCD 9203 and EORTC 2291, neoadjuvant CT-RT is considered standard treatment for LARC. The ACCORD 12/0405 PRODIGE 2 trial was initiated to optimize this regimen. Methods: Pts with T3 or resectable T4 N0–1-2 M0, rectal adenocarcinoma were randomized to arm A: concurrent RT 45Gy/25f/5 weeks (w) + capecitabine (800mg/m2/bid) or arm B: concurrent RT 50Gy/25f/5w + capecitabine (800mg/m2/bid/5/7days) + oxaliplatine 50mg/m2/w. Resection with Total Mesorectum Excision was scheduled 6 weeks after the end of CT-RT. Adjuvant chemotherapy was optional. 590 patients were needed to show an increase in the pathological complete response (Dworak) rate from 11% (arm A) to 20% (arm B). Circumferential positive rectal margin (CRM R1) was defined as the presence of residual cancer cells within 0 to 1 mm from the perirectal surface. Results: This trial closed in 07/2008 after randomization of 598 pts since 11/2005. Patients characteristics of 586 eligible pts were well balanced: male 66%, median age 61 years, 66% low rectum, 87% T3 stage. Data base was locked in March 2009. Results are reported in Table . Conclusions: The RT 50 capox regimen is compatible with surgery in 98% of cases with no increase in postoperative complication. In the RT 50 arm, there is a trend in favour of a higher rate of pathological complete sterilization and lower rate of positive CRM. These data could contribute to design a new standard preoperative regimen for LARC. 50 Gy/25 F/5 weeks combined with concurrent chemotherapy could be proposed as an efficient schedule. [Table: see text] No significant financial relationships to disclose.
Collapse
Affiliation(s)
- J. Gerard
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - D. Azria
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - S. Gourgou-Bourgade
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - I. Martel-Laffay
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - C. Hennequin
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - P. Etienne
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - V. Vendrely
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - T. Conroy
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - E. Francois
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| | - C. Montoto-Grillot
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St. Louis, Paris, France; Clinique Armoricaine de Radiologie, St. Brieuc, France; Hôpital St. André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC-BECT, Paris, France
| |
Collapse
|
24
|
Gerard J, Azria D, Gourgou-Bourgade S, Martel-Laffay I, Hennequin C, Etienne P, Vendrely V, Conroy T, Francois E, Montoto-Grillot C. Randomized multicenter phase III trial comparing two neoadjuvant chemoradiotherapy (CT-RT) regimens (RT45-Cap versus RT50-Capox) in patients (pts) with locally advanced rectal cancer (LARC): Results of the ACCORD 12/0405 PRODIGE 2. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.lba4007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
LBA4007 The full, final text of this abstract will be available in Part II of the 2009 ASCO Annual Meeting Proceedings, distributed onsite at the Meeting on May 30, 2009, and as a supplement to the June 20, 2009, issue of the Journal of Clinical Oncology. No significant financial relationships to disclose.
Collapse
Affiliation(s)
- J. Gerard
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - D. Azria
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - S. Gourgou-Bourgade
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - I. Martel-Laffay
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - C. Hennequin
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - P. Etienne
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - V. Vendrely
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - T. Conroy
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - E. Francois
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| | - C. Montoto-Grillot
- Centre Antoine Lacassagne, Nice, France; Centre Val d’Aurelle, Montpellier, France; Centre Léon Bérard, Lyon, France; Hôpital St Louis, Paris, France; Clinique Armoricaine de Radiologie, St Brieuc, France; Hôpital St André, Bordeaux, France; Centre Alexis Vautrin, Nancy, France; FNCLCC, Paris, France
| |
Collapse
|
25
|
Etienne P, Broferio P, Pulcini C, Blanc V, Labate C, Garbez E, Dellamonica P. COL3-04 Audit du chemin clinique des patients infectés au sein de 2 hôpitaux de la Communauté Inter-Hospitalière PACA-Est. Med Mal Infect 2008. [DOI: 10.1016/s0399-077x(08)73024-5] [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: 11/30/2022]
|
26
|
Etienne P, Castillo L, Carlotti B, Santini J, Dellamonica P, Roger P. P-01 Sinusites chroniques résistantes au traitement chirurgical (SCRTC) : impact de l’avis infectiologique sur l’antibiothérapie. Med Mal Infect 2008. [DOI: 10.1016/s0399-077x(08)73203-7] [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]
|
27
|
Gérard J, Azria D, Gourgou-Bourgade S, Martel-Lafay I, Hennequin C, Etienne P, De Laroche G, Mineur L, Vendrely V, Montoto-Grillot C. Randomized multicenter phase III trial comparing neoadjuvant RT-Capox and RT-Cap in patients (pts) with locally advanced rectal cancer: Preliminary safety results of the ACCORD 12/0405 PRODIGE-2. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.4089] [Citation(s) in RCA: 2] [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: 11/20/2022] Open
|
28
|
Kribich KR, Gatti S, Jabbour J, Pille G, Calas S, Mazingue T, Etienne P, Legros R, Moreau Y. Photonic circuits writing with UV pulsed laser. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/pssc.200673543] [Citation(s) in RCA: 3] [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: 11/11/2022]
|
29
|
Verstraete J, Coupard V, Thomazeau C, Etienne P. Study of direct and indirect naphtha recycling to a resid FCC unit for maximum propylene production. Catal Today 2005. [DOI: 10.1016/j.cattod.2005.07.183] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
30
|
Etienne P. [Not Available]. Demogr Hist Bull Inf Soc 2001:6-14. [PMID: 11634709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
|
31
|
Dahan J, Etienne P, Petitot AS, Houot V, Blein JP, Suty L. Cryptogein affects expression of alpha3, alpha6 and beta1 20S proteasome subunits encoding genes in tobacco. J Exp Bot 2001; 52:1947-8. [PMID: 11520884 DOI: 10.1093/jexbot/52.362.1947] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Twelve alpha and beta 20S proteasome subunits cDNAs showing 70-82% identity with the corresponding genes in Arabidopsis or rice, and features of eukaryotic proteasome subunits were cloned in tobacco. Only beta1-tcI 7, alpha3 and alpha6, 20S proteasome subunits encoding genes were up-regulated by cryptogein, a proteinaceous elicitor of plant defence reactions. These results led to the hypothesis that the activation of beta1-tcI 7, alpha3 and alpha6 could induce a specific proteolysis involved in the hypersensitive response and systemic acquired resistance monitored by cryptogein.
Collapse
Affiliation(s)
- J Dahan
- UMR INRA-Université de Bourgogne, Phytopharmacie et Biochimie des Interactions Cellulaires, INRA BP 86510, 21065 Dijon cedex, France
| | | | | | | | | | | |
Collapse
|
32
|
Houot V, Etienne P, Petitot AS, Barbier S, Blein JP, Suty L. Hydrogen peroxide induces programmed cell death features in cultured tobacco BY-2 cells, in a dose-dependent manner. J Exp Bot 2001. [PMID: 11479338 DOI: 10.1093/jxb/52.361.1721] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Active oxygen species (AOS), especially hydrogen peroxide, play a critical role in the defence of plants against invading pathogens and in the hypersensitive response (HR). This is characterized by the induction of a massive production of AOS and the rapid appearance of necrotic lesions is considered as a programmed cell death (PCD) process during which a limited number of cells die at the site of infection. This work was aimed at investigating the mode of cell death observed in cultures of BY-2 tobacco cells exposed to H(2)O(2). It was shown that H(2)O(2) is able to induce various morphological cell death features in cultured tobacco BY-2 cells. The hallmarks of cell death observed with fluorescent and electron microscopy differed greatly with the amount of H(2)O(2) added to the cell culture. The appearance of nuclear fragmentation similar to 'apoptotic bodies' associated with a fragmentation of the nuclear DNA into small fragments appear for almost 18% of the cells treated with 12.5 mM H(2)O(2). The early stages of the induction of this PCD process consisted in cell shrinkage and chromatin condensation at the periphery of the nucleus. Above 50 mM, H(2)O(2) induces high necrotic cell death. These data suggest that H(2)O(2)-induced cell damage is associated with the induction of various cell death processes that could be involved differently in plant defence reactions.
Collapse
Affiliation(s)
- V Houot
- UMR INRA-Université de Bourgogne, Phytopharmacie et Biochimie des Interactions Cellulaires, INRA BP 86510, 21065 Dijon cedex, France
| | | | | | | | | | | |
Collapse
|
33
|
Houot V, Etienne P, Petitot AS, Barbier S, Blein JP, Suty L. Hydrogen peroxide induces programmed cell death features in cultured tobacco BY-2 cells, in a dose-dependent manner. J Exp Bot 2001; 52:1721-30. [PMID: 11479338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Active oxygen species (AOS), especially hydrogen peroxide, play a critical role in the defence of plants against invading pathogens and in the hypersensitive response (HR). This is characterized by the induction of a massive production of AOS and the rapid appearance of necrotic lesions is considered as a programmed cell death (PCD) process during which a limited number of cells die at the site of infection. This work was aimed at investigating the mode of cell death observed in cultures of BY-2 tobacco cells exposed to H(2)O(2). It was shown that H(2)O(2) is able to induce various morphological cell death features in cultured tobacco BY-2 cells. The hallmarks of cell death observed with fluorescent and electron microscopy differed greatly with the amount of H(2)O(2) added to the cell culture. The appearance of nuclear fragmentation similar to 'apoptotic bodies' associated with a fragmentation of the nuclear DNA into small fragments appear for almost 18% of the cells treated with 12.5 mM H(2)O(2). The early stages of the induction of this PCD process consisted in cell shrinkage and chromatin condensation at the periphery of the nucleus. Above 50 mM, H(2)O(2) induces high necrotic cell death. These data suggest that H(2)O(2)-induced cell damage is associated with the induction of various cell death processes that could be involved differently in plant defence reactions.
Collapse
Affiliation(s)
- V Houot
- UMR INRA-Université de Bourgogne, Phytopharmacie et Biochimie des Interactions Cellulaires, INRA BP 86510, 21065 Dijon cedex, France
| | | | | | | | | | | |
Collapse
|
34
|
|
35
|
Etienne P, Petitot AS, Houot V, Blein JP, Suty L. Induction of tcI 7, a gene encoding a beta-subunit of proteasome, in tobacco plants treated with elicitins, salicylic acid or hydrogen peroxide. FEBS Lett 2000; 466:213-8. [PMID: 10682830 DOI: 10.1016/s0014-5793(00)01084-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [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: 01/04/2023]
Abstract
We previously isolated, by differential display and 5' RACE (rapid amplification of cDNA ends), cDNAs corresponding to genes activated following cryptogein treatment of tobacco cell suspensions, among them tcI 7 (tcI for tobacco cryptogein Induced), a gene encoding a beta-subunit of proteasome. Here, we report that tcl 7 was up-regulated in tobacco plants treated with elicitins (cryptogein and parasiticein) that have been shown to induce a systemic acquired resistance (SAR). Moreover, subsequent inoculation of tobacco with the pathogen Phytophthora parasitica var. nicotianae (Ppn) was shown to induce an additional activation of tcI 7 in tobacco plants pretreated with cryptogein. We also showed an up-regulation of tcI 7 by salicylic acid (SA). Moreover, accumulation of tcI 7 transcripts after treatment with cryptogein or with SA only occurred in NahG 9-tobacco plants that do not express the salicylate hydroxylase and thus are able to accumulate SA and develop a SAR. Suppressed accumulation of tcI 7 transcripts in NahG 8+ tobacco plants after cryptogein or SA treatment correlated with the loss of SAR. H2O2 was also shown to up-regulate tcI 7 in tobacco plants. Using gene walking by PCR we cloned and sequenced the 5' flanking region of tcI 7 containing hypothetical regulatory sequences, especially myb and NF-kappaB boxes, that could be responsible for the regulation of tcI 7 by salicylic acid and H2O2 respectively.
Collapse
Affiliation(s)
- P Etienne
- Unité Associée INRA-Université de Bourgogne, Phytopharmacie et Biochimie des Interactions Cellulaires, Dijon, France
| | | | | | | | | |
Collapse
|
36
|
Rustérucci C, Montillet JL, Agnel JP, Battesti C, Alonso B, Knoll A, Bessoule JJ, Etienne P, Suty L, Blein JP, Triantaphylidès C. Involvement of lipoxygenase-dependent production of fatty acid hydroperoxides in the development of the hypersensitive cell death induced by cryptogein on tobacco leaves. J Biol Chem 1999; 274:36446-55. [PMID: 10593941 DOI: 10.1074/jbc.274.51.36446] [Citation(s) in RCA: 188] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Lipid peroxidation was investigated in relation with the hypersensitive reaction in cryptogein-elicited tobacco leaves. A massive production of free polyunsaturated fatty acid (PUFA) hydroperoxides dependent on a 9-lipoxygenase (LOX) activity was characterized during the development of leaf necrosis. The process occurred after a lag phase of 12 h, was accompanied by the concomitant increase of 9-LOX activity, and preceded by a transient accumulation of LOX transcripts. Free radical-mediated lipid peroxidation represented 10% of the process. Inhibition and activation of the LOX pathway was shown to inhibit or to activate cell death, and evidence was provided that fatty acid hydroperoxides are able to mimic leaf necrotic symptoms. Within 24 h, about 50% of leaf PUFAs were consumed, chloroplast lipids being the major source of PUFAs. The results minimize the direct participation of active oxygen species from the oxidative burst in membrane lipid peroxidation. They suggest, furthermore, the involvement of lipase activity to provide the free PUFA substrates for LOX. The LOX-dependent peroxidative pathway, responsible for tissue necrosis, appears as being one of the features of hypersensitive programmed cell death.
Collapse
Affiliation(s)
- C Rustérucci
- CEA-Cadarache, Direction des Sciences du Vivant, Département d'Ecophysiologie Végétale et de Microbiologie, Laboratoire de Radiobiologie Végétale, 13108 Saint-Paul Lez Durance Cedex, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Mansvelt B, Bertrand C, Versaille H, Nokerman P, Etienne P, de Neve de Roden A. Systematic use of total vascular exclusion in 14 elective hepatic resections. Acta Chir Belg 1999; 99:159-62. [PMID: 10499385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Between March 1992 and May 1995, 14 hepatic resections under total vascular exclusion were performed (10 major resections and 4 minor resections involving central segments). Mean age was 64 years (SD +/- 12). During hepatic resection, 4 patients required blood transfusion. The reason was a too low level of haemoglobin (< 10 gr/100 ml) to undergo Hepatic Vascular Exclusion (HVE) (1 patient), an unacceptable decrease in blood pressure following HVE leading to insertion of venovenous bypass (1 patient), or an extensive bleeding following removal of the clamps (2 patients). The 10 remaining patients did not need peroperative blood transfusion. Two patients were transfused after the 6th postoperative day. Complications usually described during HVE were not encountered except for one pleural effusion needing thoracocentesis.
Collapse
Affiliation(s)
- B Mansvelt
- Department of digestive surgery, Hôpital de Jolimont, Haine Saint Paul, Belgium
| | | | | | | | | | | |
Collapse
|
38
|
Etienne P, Parés-Herbuté N, Mani-Ponset L, Gabrion J, Rabesandratana H, Herbuté S, Monnier L. Phenotype modulation in primary cultures of aortic smooth muscle cells from streptozotocin-diabetic rats. Differentiation 1998; 63:225-36. [PMID: 9745713 DOI: 10.1111/j.1432-0436.1998.00225.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diabetes mellitus is a major risk factor for atherosclerosis. In atherosclerotic lesions, arterial smooth muscle cells (SMC) change from a contractile to a synthetic phenotype characterized by active proliferation. A similar phenotype modulation occurs in vitro when isolated arterial SMC are grown in culture and is characterized by both changes in cell morphology and a typical switch in actin isoform expression. In this study, we examined the influence of streptozotocin (STZ)-induced diabetes on the differentiation state and the phenotype modulation of cultured rat aortic SMC. We used transmission electron microscopy to study the fine structure of STZ-diabetic and non-diabetic SMC in primary culture and immunological methods for the determination of the proportions of alpha-smooth muscle actin (alpha-SM) and nonmuscle beta-actin (beta-NM) isoforms. Cultured STZ-diabetic SMC exhibited a large cytoplasmic volume, rich in rough endoplasmic reticulum, when compared with cultured non-diabetic SMC. alpha-SM, organized in stress fibers, was less homogeneously and abundantly distributed and by contrast, beta-NM was more abundant in STZ-diabetic than in non-diabetic SMC. Cytofluorimetric analyses demonstrated that the alpha-SM content was reduced in freshly STZ-diabetic SMC. Furthermore, during logarithmic growth of cultured SMC, the decrease of alpha-SM was more important in STZ-diabetic than in non-diabetic SMC. Immunoblotting of actin isoforms confirmed that expression of beta-NM was more important in STZ-diabetic than in non-diabetic SMC even in freshly isolated cells. The results suggest that SMC from STZ-diabetic rats express a more dedifferentiated state and undergo a more rapid phenotypic modulation in primary cultures than SMC from non-diabetic rats. Therefore, diabetes could induce changes in the phenotype of arterial SMC which might be associated with the onset or progression of the atherogenic process.
Collapse
MESH Headings
- Actins/analysis
- Actins/biosynthesis
- Animals
- Aorta, Thoracic/cytology
- Aorta, Thoracic/pathology
- Aorta, Thoracic/ultrastructure
- Cell Differentiation
- Cell Division
- Cells, Cultured
- Diabetes Mellitus, Experimental/pathology
- Flow Cytometry
- Kinetics
- Male
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/pathology
- Muscle, Smooth, Vascular/ultrastructure
- Phenotype
- Rats
- Rats, Wistar
- Reference Values
- Time Factors
Collapse
Affiliation(s)
- P Etienne
- Department of Metabolism, Lapeyronie Hospital, Montpellier, France
| | | | | | | | | | | | | |
Collapse
|
39
|
Etienne P, Parés-Herbuté N, Monnier L. Regulation of growth of cultured smooth muscle cells from diabetic rats by interleukin-1 beta: role of nitric oxide. Eur J Pharmacol 1996; 311:79-86. [PMID: 8884240 DOI: 10.1016/0014-2999(96)00398-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 02/02/2023]
Abstract
We examined the influence of streptozotocin-induced diabetes on the growth of cultured rat aortic smooth muscle cells in the presence of interleukin-1 beta. Interleukin-1 beta induced a dose-dependent biphasic effect on proliferation of diabetic and control smooth muscle cells, consistent with the data on [3H]thymidine incorporation and cell counts. However, the major effect of interleukin-1 beta was to stimulate growth of diabetic cells and inhibit growth of control cells. Furthermore, interleukin-1 beta induced a dose-dependent increase in nitric oxide (NO) release and in intracellular cyclic GMP accumulation: nitrite release was similar in both smooth muscle cell models but cyclic GMP accumulation was greater in diabetic cells than in controls. These results suggest that the inhibitory loop involving NO is not effective enough to completely counterbalance the stimulatory effects of interleukin-1 beta on diabetic cells. Therefore, experimental diabetes may modify the interleukin-1 beta-regulated smooth muscle cell growth.
Collapse
Affiliation(s)
- P Etienne
- Service des Maladies Métaboliques, Hôpital Lapeyronie, Montpellier, France
| | | | | |
Collapse
|
40
|
Parés-Herbuté N, Hillaire-Buys D, Etienne P, Gross R, Loubatières-Mariani MM, Monnier L. Adenosine inhibitory effect on enhanced growth of aortic smooth muscle cells from streptozotocin-induced diabetic rats. Br J Pharmacol 1996; 118:783-9. [PMID: 8762108 PMCID: PMC1909711 DOI: 10.1111/j.1476-5381.1996.tb15468.x] [Citation(s) in RCA: 19] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
1. There is evidence to suggest that adenosine may regulate arterial smooth muscle cell (SMC) growth and proliferation, which is a key event in atherogenesis. This regulation may be mediated via adenylate cyclase. As diabetes is a known risk factor for atherosclerosis, we investigated the growth of aortic SMC from diabetic rats in primary culture and their sensitivity to adenosine and to adenylate cyclase activity. 2. Diabetes was induced with streptozotocin (STZ, 66 mg kg-1, i.p.) Aortic SMC primary cultures were prepared from STZ-diabetic and age-matched rats 5 weeks after the STZ injection. 3. SMC from STZ-diabetic rats grew faster and reached greater densities at confluence than those from non-diabetic animals. 4. Adenosine inhibited growth in both control and diabetic SMC. However, cells from STZ-diabetic rats were apparently more sensitive to adenosine. 5. Direct activation of adenylate cyclase by forskolin induced a dose-dependent growth inhibition, similar in both groups of cells. 6. Cholera toxin, an activator of stimulatory GTP-binding protein (Gs), induced a similar growth inhibitory response in non-diabetic and diabetic SMC. Pertussis toxin (PTX), an inactivator of inhibitory GTP-binding protein (Gi), did not itself affect SMC growth. However, PTX increased dose-dependently the growth inhibition induced by adenosine in SMC from non-diabetic rats but not in SMC from diabetic rats. 7. These findings suggest a functional abnormality in Gi activity in SMC from diabetic rats, that would explain the increased sensitivity to the nucleoside. This impaired inhibitory pathway may reflect changes in the growth regulation of SMC in experimental diabetic states.
Collapse
Affiliation(s)
- N Parés-Herbuté
- Department of Metabolism, Lapeyronie Hospital, Montpellier, France
| | | | | | | | | | | |
Collapse
|
41
|
Fischman A, Williams S, Drury C, Etienne P, Rubin R. Sustained 5HT2A receptor occupancy of ziprasidone using pet ligand 18F setoperone in healthy volunteers. Eur Psychiatry 1996. [DOI: 10.1016/0924-9338(96)89339-4] [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: 10/18/2022] Open
|
42
|
Abstract
We examined the influence of experimental diabetes on the proliferation of cultured vascular smooth muscle cells (VSMCs) in presence of a nitric oxide (NO)-generating agent, sodium nitroprusside (SNP), and 8-bromo-cGMP. VSMC cultures were prepared from aortas of control and streptozotocin-diabetic rats. SNP induced a time- and dose-dependent inhibition of control and diabetic VSMC proliferation, consistent with the data on [3H]thymidine incorporation, cell counts, and index of culture mass. However, the responses to SNP were significantly enhanced in VSMCs from diabetic rats. SNP induced an increased dose-dependent accumulation of intracellular cGMP in diabetic VSMCs. In contrast, growth-inhibitory responses to 8-bromo-cGMP were not significantly different between the two VSMC models. Moreover, basal cGMP content in VSMCs was lower in diabetic rats than in controls, a result that can explain the enhanced proliferation observed in VSMCs from diabetic rats. These results suggest an enhanced antiproliferative effect of NO in VSMCs from diabetic rats through increased cGMP production. Therefore, experimental diabetes may impair and up-regulate soluble guanylate cyclase activity in VSMCs.
Collapse
Affiliation(s)
- P Etienne
- Service des Maladies Métaboliques, Hôpital Lapeyronie, Montpellier, France
| | | | | |
Collapse
|
43
|
Lambert J, Bath O, Etienne P, Mondo AC. [Recurrent post-traumatic osteitis of the leg: Patent Blue V® dye, Gentamicin-PMMA-Beads and double muscular flap]. Eur J Orthop Surg Traumatol 1995; 5:245-7. [PMID: 24193441 DOI: 10.1007/bf02716528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/1995] [Accepted: 07/14/1995] [Indexed: 10/22/2022]
Abstract
The authors describe the case of a 31-year old man who had a recurrent post-traumatic osteitis of the left leg with two fistulae for more than one year. Many unsuccessful proceedures were tried: removal of the tibial nail with reaming and filling with Gentamicin-PMMA-beads, fascio-cutaneous flap and open cancellous bone graft. They emphasize the bacteriological and imaging examinations particularly MRI. They recommend high-pressure oxygen therapy for a few days before operation in the case of chronic infected tissues, the use of Patent Blue V® dye to display bone sequestra prominently, filling with Gentamicin-PMMA-beads, an effective cover, in this case, with an original double muscular flap and long-term antibiotics. The rapid normalization of the CRP (C Reactive Protein) is a good sign of healing and the authors think that MRI allows early detection of recurrence of infection and shows the good perfusion of the muscular flap.
Collapse
Affiliation(s)
- J Lambert
- Service d'Orthopédie-Traumatologie, C.I.U Ambroise Paré, 2, Boulevard Kennedy, B-7000, Mons, Belgique
| | | | | | | |
Collapse
|
44
|
Reith J, Benkelfat C, Sherwin A, Yasuhara Y, Kuwabara H, Andermann F, Bachneff S, Cumming P, Diksic M, Dyve SE, Etienne P, Evans AC, Lal S, Shevell M, Savard G, Wong DF, Chouinard G, Gjedde A. Elevated dopa decarboxylase activity in living brain of patients with psychosis. Proc Natl Acad Sci U S A 1994; 91:11651-4. [PMID: 7972118 PMCID: PMC45289 DOI: 10.1073/pnas.91.24.11651] [Citation(s) in RCA: 222] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
The hypofrontality theory of the pathogenesis of schizophrenia predicts that cortical lesions cause psychosis. During a search for abnormalities of catecholaminergic neurotransmission in patients with complex partial seizures of the mesial temporal lobe, we discovered an increase of the rate of metabolism of an exogenous dopa tracer (6-[18F]fluoro-L-dopa) in the neostriatum of a subgroup of patients with a history of psychosis. When specifically assayed for this abnormality, patients with schizophrenia revealed the same significant increase of the rate of metabolism in the striatum. The finding is consistent with the theory that a state of psychosis arises when episodic dopamine excess is superimposed on a trait of basic dopamine deficiency in the striatum. The finding is explained by the hypothesis that cortical insufficiency, a proposed pathogenetic mechanism of both disorders, causes an up-regulation of the enzymes responsible for dopa turnover in the neostriatum as well as the receptors mediating dopaminergic neurotransmission.
Collapse
Affiliation(s)
- J Reith
- McConnell Brain Imaging Center, Montreal Neurological Institute, PQ Canada
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Etienne P, Pare´s-Herbute´ N, Monnier L. Effect of nitric oxide on enhanced growth of aortic smooth muscle cells from streptozotocin-diabetic rats. Atherosclerosis 1994. [DOI: 10.1016/0021-9150(94)93773-7] [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: 10/24/2022]
|
46
|
Etienne P, Massies J. Basic considerations on the growth of metallic layers by molecular
beam epitaxy: application to Cr/Fe, Ag/Fe and Cu/Co multilayers. ACTA ACUST UNITED AC 1993. [DOI: 10.1051/jp3:1993221] [Citation(s) in RCA: 7] [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: 11/14/2022]
|
47
|
Picaud A, Morio B, Bideault J, Caudron D, Mariotte G, Etienne P. [Peritonitis caused by a purulent cyst of the urachus in a young woman]. J Chir (Paris) 1993; 130:32-36. [PMID: 8496255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Urachal cysts are not exceptional and are observed more often in children. In adults, they may become infected and cause clinical symptoms associating subumbilical midabdominal pain, fever, guarding and leukocytosis. Intraperitoneal rupture is exceptional (21 published cases) and only 7 cases have involved adult female patients. The authors report the case of a 27-year old woman with peritonitis caused by rupture of a suppurated urachal cyst, 6 cm in diameter, for which diagnosis was established by perioperative ultrasound. The surgical procedure used consisted of total excision of the urachus, the umbilico-prevesical fascia and partial excision of the dome of the urinary bladder. Indeed, total excision is imperative because of the risk of malignant degeneration of this mass into an adenocarcinoma.
Collapse
Affiliation(s)
- A Picaud
- Service de Gynécologie-Obstétrique, Centre Hospitalier de Loudeac
| | | | | | | | | | | |
Collapse
|
48
|
Abbott FV, Etienne P, Franklin KB, Morgan MJ, Sewitch MJ, Young SN. Acute tryptophan depletion blocks morphine analgesia in the cold-pressor test in humans. Psychopharmacology (Berl) 1992; 108:60-6. [PMID: 1410147 DOI: 10.1007/bf02245286] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The effects of depletion of the serotonin precursor, L-tryptophan, on the threshold and tolerance to cold pressor pain, and the analgesic effect of morphine (10 mg intramuscularly), were tested in a double blind trial on human volunteers. Effects on mood were also assessed using the Profile of Mood States and the Addiction Research Center Inventory (ARCI) Scales. To deplete tryptophan, subjects were fed a tryptophan-deficient amino acid mixture 4.5 h before morphine was administered. Controls received the mixture with tryptophan, which is equivalent to a nutritionally balanced protein. The tryptophan-deficient meal reduced plasma tryptophan more than 70% but had no effect on threshold or tolerance to cold pressor pain. After morphine, tolerance to cold pressor pain increased in controls. Tryptophan depletion abolished this analgesic effect. Pain threshold was not altered by morphine. In subjects with normal tryptophan, the analgesic effect of morphine was predicted by the level of plasma morphine-6-glucuronide, but not by the level of morphine. Morphine increased scores on the LSD scale of the ARCI, but had no effect on other measures of mood. Tryptophan depletion also failed to alter mood in these subjects, who had unusually low depression scores before tryptophan depletion.
Collapse
Affiliation(s)
- F V Abbott
- Department of Psychiatry, McGill University, Montreal, Quebec, Canada
| | | | | | | | | | | |
Collapse
|
49
|
Mühlbauer B, Schwenk M, Coram WM, Antonin KH, Etienne P, Bieck PR, Douglas FL. Magnesium-L-aspartate-HCl and magnesium-oxide: bioavailability in healthy volunteers. Eur J Clin Pharmacol 1991; 40:437-8. [PMID: 2050185 DOI: 10.1007/bf00265863] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
50
|
|