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Reissig TM, Tzianopoulos I, Liffers ST, Rosery VK, Guyot M, Ting S, Wiesweg M, Kasper S, Meister P, Herold T, Schmidt HH, Schumacher B, Albers D, Markus P, Treckmann J, Schuler M, Schildhaus HU, Siveke JT. Smaller panel, similar results: genomic profiling and molecularly informed therapy in pancreatic cancer. ESMO Open 2023; 8:101539. [PMID: 37148593 DOI: 10.1016/j.esmoop.2023.101539] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/12/2023] [Accepted: 03/24/2023] [Indexed: 05/08/2023] Open
Abstract
BACKGROUND Pancreatic cancer has a dismal prognosis. One reason is resistance to cytotoxic drugs. Molecularly matched therapies might overcome this resistance but the best approach to identify those patients who may benefit is unknown. Therefore, we sought to evaluate a molecularly guided treatment approach. MATERIALS AND METHODS We retrospectively analyzed the clinical outcome and mutational status of patients with pancreatic cancer who received molecular profiling at the West German Cancer Center Essen from 2016 to 2021. We carried out a 47-gene DNA next-generation sequencing (NGS) panel. Furthermore, we assessed microsatellite instability-high/deficient mismatch repair (MSI-H/dMMR) status and, sequentially and only in case of KRAS wild-type, gene fusions via RNA-based NGS. Patient data and treatment were retrieved from the electronic medical records. RESULTS Of 190 included patients, 171 had pancreatic ductal adenocarcinoma (90%). One hundred and three patients had stage IV pancreatic cancer at diagnosis (54%). MMR analysis in 94 patients (94/190, 49.5%) identified 3 patients with dMMR (3/94, 3.2%). Notably, we identified 32 patients with KRAS wild-type status (16.8%). To identify driver alterations in these patients, we conducted an RNA-based fusion assay on 13 assessable samples and identified 5 potentially actionable fusions (5/13, 38.5%). Overall, we identified 34 patients with potentially actionable alterations (34/190, 17.9%). Of these 34 patients, 10 patients (10/34, 29.4%) finally received at least one molecularly targeted treatment and 4 patients had an exceptional response (>9 months on treatment). CONCLUSIONS Here, we show that a small-sized gene panel can suffice to identify relevant therapeutic options for pancreatic cancer patients. Informally comparing with previous large-scale studies, this approach yields a similar detection rate of actionable targets. We propose molecular sequencing of pancreatic cancer as standard of care to identify KRAS wild-type and rare molecular subsets for targeted treatment strategies.
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Affiliation(s)
- T M Reissig
- Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Heidelberg, Germany; Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany; German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany
| | - I Tzianopoulos
- Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Heidelberg, Germany; Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany
| | - S-T Liffers
- Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Heidelberg, Germany; German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany
| | - V K Rosery
- Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Heidelberg, Germany; Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany; German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany
| | - M Guyot
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany; Department of Gastroenterology, Oncology und Hematology, Diabetology and Rheumatology, Marien-Hospital Wesel, Wesel, Germany
| | - S Ting
- Institute of Pathology, West German Cancer Center, University Hospital Essen, Essen, Germany
| | - M Wiesweg
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany; German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany
| | - S Kasper
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany; German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany
| | - P Meister
- Department of General, Visceral and Transplantation Surgery, Hepatology, and Transplant Medicine, University Hospital Essen, Essen, Germany
| | - T Herold
- Institute of Pathology, West German Cancer Center, University Hospital Essen, Essen, Germany
| | - H H Schmidt
- Department of Gastroenterology, Hepatology, and Transplant Medicine, University Hospital Essen, Essen, Germany
| | - B Schumacher
- Department of Gastroenterology, Visceral and Trauma Surgery, Elisabeth Hospital Essen, Essen, Germany
| | - D Albers
- Department of Gastroenterology, Visceral and Trauma Surgery, Elisabeth Hospital Essen, Essen, Germany
| | - P Markus
- Department of General, Visceral and Trauma Surgery, Elisabeth Hospital Essen, Essen, Germany
| | - J Treckmann
- Department of General, Visceral and Transplantation Surgery, Hepatology, and Transplant Medicine, University Hospital Essen, Essen, Germany
| | - M Schuler
- Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany; German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany
| | - H-U Schildhaus
- German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany; Institute of Pathology, West German Cancer Center, University Hospital Essen, Essen, Germany
| | - J T Siveke
- Bridge Institute of Experimental Tumor Therapy, West German Cancer Center, University Hospital Essen, Essen, Germany; Division of Solid Tumor Translational Oncology, German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Heidelberg, Germany; Department of Medical Oncology, West German Cancer Center, University Hospital Essen, Essen, Germany; German Cancer Consortium (DKTK), Partner Site University Hospital Essen, Essen, Germany.
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Pelgrims I, Bastiaens H, Devleesschauwer B, Keune H, Nawrot T, Remmen R, Saenen N, Guyot M, De Clercq EM. Validity of air pollution annoyance to assess long-term exposure to air pollution in Belgium. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.088] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
In environmental epidemiology, air pollution exposure is often estimated at the population level. To avoid the risk of exposure misclassification, one possibility is to interpolate air pollution measures at the residence through Geographical Information Systems. However, this might imply cumbersome administrative procedures. Data on air pollution annoyance from surveys can be an alternative to assess individual exposure to air pollution. This study investigates the association between air pollution annoyance and individual air pollution exposure.
Methods
Analyses were carried out based on a linkage of data from the Belgian Health Interview Survey (HIS 2008 and 2013; >15 years; n = 9347) and annual means of air pollution concentration at the residence. Self-reported air pollution annoyance was assessed through a five-point Likert scale. Statistical analyses included Spearman correlation coefficient, analysis of variance and multivariable ordinal logistic regressions (OLR).
Results
A significant exposure-response relationship was observed between long-term air pollution exposure and self-reported air pollution annoyance. However, Spearman coefficients were low (0.18-0.24), meaning a high heterogeneity of annoyance levels for a given exposure. In multivariable OLR, the odds of being annoyed by air pollution was 2.10 (95% CI: 1.86-2.67) times higher for each Interquartile range (IQR) increase in NO2 concentration (PM2.5: 1.77 [95% CI: 1.53-2.07], PM10: 1.61 [95% CI: 1.33-1.67], black carbon: 1.45 [95% CI: 1.27-1.67]). Air pollution annoyance depended largely on individual factors especially health status.
Conclusions
Air pollution exposure has a significant influence on self-reported air pollution annoyance. However, many other factors were found to influence annoyance, independently of the exposure. We found a limited validity of self-reported air pollution annoyance to assess individual long-term exposure to air pollution.
Key messages
Significant exposure-response relationship between individual long-term air pollution exposure and self-reported air pollution annoyance. Limited validity of self-reported air pollution annoyance for assessing individual long term exposure to air pollution.
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Affiliation(s)
- I Pelgrims
- Department of Risk and Health Impact Assessment, Sciensano, Brussels, Belgium
- Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
| | - H Bastiaens
- Primary and Interdisciplinary Care, University of Antwerp, Antwerp, Belgium
| | - B Devleesschauwer
- Department of Epidemiology and Public health, Sciensano, Brussels, Belgium
- Department of Veterinary Public Health and Food Safety, Ghent University, Merelbeke, Belgium
| | - H Keune
- Nature and Society, Own-Capital Research Institute for Nature and Forest, Brussels, Belgium
- Primary and Interdisciplinary Care, University of Antwerp, Antwerp, Belgium
| | - T Nawrot
- Center for Environmental Sciences, University of Hasselt, Hasselt, Belgium
| | - R Remmen
- Primary and Interdisciplinary Care, University of Antwerp, Antwerp, Belgium
| | - N Saenen
- Center for Environmental Sciences, University of Hasselt, Hasselt, Belgium
| | - M Guyot
- Center for Operations Research and Econometrics, University of Louvain, Louvain La Neuve, Belgium
| | - E M De Clercq
- Department of Risk and Health Impact Assessment, Sciensano, Brussels, Belgium
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Karthaus M, Hoell B, Zaun G, Guyot M, Schuler MH, Kasper S. Exploratory analysis of trifluridine/tipiracil in late-stage metastatic colorectal cancer (mCRC): Prognostic factors. J Clin Oncol 2020. [DOI: 10.1200/jco.2020.38.4_suppl.24] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
24 Background: Trifluridine/Tipiracil (FTD/TPI) is effective in pts with refractory mCRC. Enrollment into in the RECOURSE trial was allowed only for pts with ECOG < 1 pts, while real world pts may have a lower ECOG. In addition, predictive markers for the efficacy of FTD/TPI at late stage are open. This exploratory analysis assessed outcome of mCRC pts (including ECOG PS ≥ 2) upon FTD/TPI treatment by prognostic factors in the real world setting. Methods: This cohort included mCRC pts who were treated with FTD/TPI from 01/2016 until 08/2019 at two large volume CRC centers in Germany. Pts were classified with good prognosis characteristics (GPC) according to Tabernero et al. (abstract 677, ASCO-GI 2019) defined by 1 or 2 metastatic sites and time since diagnosis of first metastases ≥ 18 mo. Pts of this group without liver metastases had the best prognostic characteristics. Pts with poor prognostic characteristics (PPC) were characterized by ≥ 3 metastases sites and time since diagnosis of first metastases ≤ 18 mo. Results: A total of 44 mCRC pts were included in this analysis (mean age 62.5 yrs; 22 males and 22 females). Within the GPC population (n=28; median age 67 yrs; KRAS wt n= 21; KRAS mt n= 7; ECOG 0-1 n= 23; ECOG ≥ 2n=7) 6 pts were alive up to 08/2019 and 4 were lost to FU. Four pts of the GPC were without liver metastases. Within the PPC group (n=16; median age 59 yrs; KRAS wt n= 6; KRAS mt n= 10; ECOG 0-1 n= 15; ECOG ≥ 2 n=1) 2 pts were alive and 2 were lost to FU. The mPFS and mOS of the GPC group (n=18) were 2,15 mo (range 0,62-10,13) and 4,63 mo (range 0,95-14,39), respectively. The mPFS and mOS of the PPC group (n=12) were 1,31 mo (range 0,76-9,72) and 4,72 mo (range 0,76-16,61), respectively. Pts with an ECOG ≥ 2 had a mOS of 2,76 mo (range 0,95-6,92), and a mPFS 1,67 mo (range 0,53-1,77). Conclusions: GPC and PPC group pts treated with FTD/TPI differed with respect to mPFS, but these pts had a comparable mOS in the real world setting. PFS and OS were lower when compared to the Tabernero analysis of the RECOURSE trial, which may reflect the real world setting. Inclusion of pts with an ECOG of ≥ 2 was feasible but showed poor survival data in the third line. Nevertheless, all pts with mCRC benefited from FTD/TPI treatment.
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Affiliation(s)
- Meinolf Karthaus
- Hematology, Oncology, and Palliative Medicine, Klinikum Neuperlach and Harlaching, Munich, Germany
| | - B Hoell
- Klinikum Neuperlach, Munich, Germany
| | - G Zaun
- University Hospital, Essen, Germany
| | - M Guyot
- University Hospital, Essen, Germany
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Hick A, Prokic I, Bousson F, Fugier C, Gobert B, Hestin M, Riguet E, Cherrier T, Chal J, Pourquie O, Guyot M, Bonnefoy J. A novel drug screening approach to identify new drug candidates for the treatment of Duchenne muscular dystrophy. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.350] [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]
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Guyot M, Gubernatis P, Suteau C. On the Multiple-Pin Modeling of the Fuel Bundle for the Simulation of the Initiating Phase of a Severe Accident in a Sodium Fast Reactor. NUCL SCI ENG 2017. [DOI: 10.13182/nse13-80] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Guyot
- Commissariat à l’É nergie Atomique, DEN/DTN/SMTA/LPMA, Cadarache 13115 St. Paul-lez-Durance, France
| | - P. Gubernatis
- Commissariat à l’É nergie Atomique, DEN/DTN/SMTA/LPMA, Cadarache 13115 St. Paul-lez-Durance, France
| | - C. Suteau
- Commissariat à l’É nergie Atomique, DEN/DTN/SMTA/LPMA, Cadarache 13115 St. Paul-lez-Durance, France
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Jones F, Thibon P, Guyot M, Molin A, Jeanne-Pasquier C, Guillois B, Benoist G, Dreyfus M. Practice of pathological examinations in stillbirths: A 10-year retrospective study. J Gynecol Obstet Hum Reprod 2016; 46:61-67. [PMID: 28403958 DOI: 10.1016/j.jgyn.2016.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 05/28/2016] [Accepted: 06/07/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVES To describe the practice of fetal and placental pathological examinations in a large series of spontaneous stillbirths over 10 years. MATERIALS AND METHODS Inclusion of cases recorded by the Lower Normandy Regional Fetal-Infant Mortality Observatory (observatoire régional de mortalité fœto-infantile) from January 1, 2005 to December 31, 2014. The possible cause of death was coded in accordance with the ReCoDe classification system. RESULTS Seven hundred and forty-four cases were recorded. The placental examinations were conducted in 93.7% of cases (CI95%[91.7-95.3]), increasing over the study period, and an autopsy was proposed in 87.2% of cases (CI95%[84.8-89.6]). Autopsy was conducted less frequently during the most recent period, with parental refusal increasing over time. In multivariate analysis, no factor was associated with a higher frequency of placental examinations, while autopsy was proposed more often under certain circumstances: less than 4 pregnancies (P<10-2), birth weight from 1000 to 1500 grams (P=0.05), singleton (P<10-2), clinical context not suggesting a cause (P<10-3), type 1 or 2 maternity ward (P<10-2), antepartum death (P<10-3). CONCLUSION Placental analysis was almost systematically realized, as suggested by international guidelines. Fetal autopsy was often performed, however only in some specific circumstances. New practice guidance to realize customized fetal autopsies appear to be necessary.
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Affiliation(s)
- F Jones
- Perinatal Network, CHU de Caen, 14000 Caen, France; Gynecology-Obstetrics Unit, CHU de Caen, 14000 Caen, France.
| | - P Thibon
- Perinatal Network, CHU de Caen, 14000 Caen, France
| | - M Guyot
- Perinatal Network, CHU de Caen, 14000 Caen, France; Gynecology-Obstetrics Unit, CHU de Caen, 14000 Caen, France; Pathological Anatomy Unit, CHU de Caen, 14000 Caen, France
| | - A Molin
- Cytogenetics Unit, CHU de Caen, 14000 Caen, France; Neonatal Unit, CHU de Caen, 14000 Caen, France; Pathological Anatomy Unit, CHU de Caen, 14000 Caen, France
| | - C Jeanne-Pasquier
- Perinatal Network, CHU de Caen, 14000 Caen, France; Pathological Anatomy Unit, CHU de Caen, 14000 Caen, France
| | - B Guillois
- Perinatal Network, CHU de Caen, 14000 Caen, France; Medical School, University of Caen Lower-Normandy, 14000 Caen, France; Neonatal Unit, CHU de Caen, 14000 Caen, France
| | - G Benoist
- Perinatal Network, CHU de Caen, 14000 Caen, France; Gynecology-Obstetrics Unit, CHU de Caen, 14000 Caen, France; Neonatal Unit, CHU de Caen, 14000 Caen, France
| | - M Dreyfus
- Perinatal Network, CHU de Caen, 14000 Caen, France; Gynecology-Obstetrics Unit, CHU de Caen, 14000 Caen, France; Neonatal Unit, CHU de Caen, 14000 Caen, France
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Salvat G, Guyot M, Protino J. Monitoring Salmonella, Campylobacter, Escherichia coli and Staphylococcus aureus in traditional free-range 'Label Rouge' broiler production: a 23-year survey programme. J Appl Microbiol 2016; 122:248-256. [PMID: 27699969 DOI: 10.1111/jam.13313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 09/10/2015] [Revised: 11/27/2015] [Accepted: 12/03/2015] [Indexed: 11/29/2022]
Abstract
AIM 'Label Rouge' broiler free-range carcasses have been monitored since 1991, and broiler flocks since 2010, for contamination by the main foodborne zoonotic bacteria. METHODS AND RESULTS Initially, the monitoring plan mainly focused on the surveillance of Salmonella, and on indicators of the overall microbiological quality of free-range broiler carcasses such as Staphylococcus aureus and coliforms, but was extended in 2007 to include Campylobacter enumeration on carcasses and in 2010, to Salmonella in the environment of live birds. Salmonella contamination of free-range broiler carcasses rose to a peak of 16% in 1994 but less than 1% of carcasses are now regularly found to be positive. Indicators of the overall microbiological quality of carcasses are also improving. These results correlate with the low prevalence of Salmonella in free-range broiler breeding and production flocks, and with the continuous improvement of hazard analysis and critical control points in slaughterhouses, the implementation of a good manufacturing practice guide since 1997 and the application of EU regulations on Salmonella since 1998 in France. Regarding Campylobacter counts on carcasses, the situation has been improving continuously over the last few years, even if 2·5% of the carcasses are still contaminated by more than 1000 Campylobacter per g of skin. CONCLUSIONS Although the current control system focusing on Salmonella is based on firm epidemiologic data and offers effective means of control (e.g. slaughtering of positive breeder flocks), existing information on Campylobacter makes it more difficult to formulate an effective control plan for free-range broilers, due to their particular exposure to environmental contamination. SIGNIFICANCE AND IMPACT OF THE STUDY This long-term surveillance programme provided an extended view of the evolution of the contamination of free-range broilers and a direct measurement of the impact of mandatory and profession-driven interventions on the microbiological quality of carcasses.
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Affiliation(s)
- G Salvat
- Laboratory of Ploufragan/Plouzané, Agence Nationale de Sécurité Sanitaire de l'Alimentation de, l'Environnement et du Travail, Université Européenne de Bretagne, Ploufragan, France
| | - M Guyot
- SYNALAF (Syndicat National des Labels Avicoles de France), Paris, France
| | - J Protino
- SYNALAF (Syndicat National des Labels Avicoles de France), Paris, France
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Grepin R, Guyot M, Durivault J, Front B, Ambrosetti D, Pagès G. Investigating the combination of bevacizumab and the EGF receptor inhibitor erlotinib for the treatment of metastatic renal cell carcinoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw392.31] [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: 11/14/2022] Open
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Catanzariti JF, Le Berre M, Coget M, Guyot M, Agnani O, Donzé C. Subjective Visual Vertical and Adolescent Idiopathic Scoliosis (AIS). Ann Phys Rehabil Med 2015. [DOI: 10.1016/j.rehab.2015.07.270] [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: 10/23/2022]
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Vélayoudom-Céphise F, Morgat C, Schwartz P, Nunes M, Guyot M, Schulz J, Mazère J, Gaye D, Hindie E, Fernandez P, Tabarin A. Étude comparative de la TEP au 68Ga DOTATOC et de la tomoscintigraphie à l’111In-DTPA-octréotide pour le dépistage des tumeurs neuroendocrines duodénopancréatiques des patients porteurs d’une NEM1 : étude pilote. Annales d'Endocrinologie 2015. [DOI: 10.1016/j.ando.2015.07.927] [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] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Le Berre M, Guyot M, Agnani O, Versyp M, Bourdeauducq I, Donzé C, Catanzariti J. Clinical equilibration tests, proprioceptive system and Adolescent Idiopathic Scoliosis (AIS). Ann Phys Rehabil Med 2015. [DOI: 10.1016/j.rehab.2015.07.272] [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: 10/23/2022]
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Chiche J, Pommier S, Beneteau M, Mondragón L, Meynet O, Zunino B, Mouchotte A, Verhoeyen E, Guyot M, Pagès G, Mounier N, Imbert V, Colosetti P, Goncalvès D, Marchetti S, Brière J, Carles M, Thieblemont C, Ricci JE. GAPDH enhances the aggressiveness and the vascularization of non-Hodgkin's B lymphomas via NF-κB-dependent induction of HIF-1α. Leukemia 2014; 29:1163-76. [PMID: 25394713 DOI: 10.1038/leu.2014.324] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 11/04/2014] [Accepted: 11/10/2014] [Indexed: 12/22/2022]
Abstract
Deregulated expression of glycolytic enzymes contributes not only to the increased energy demands of transformed cells but also has non-glycolytic roles in tumors. However, the contribution of these non-glycolytic functions in tumor progression remains poorly defined. Here, we show that elevated expression of glyceraldehyde-3-phosphate dehydrogenase (GAPDH), but not of other glycolytic enzymes tested, increased aggressiveness and vascularization of non-Hodgkin's lymphoma. Elevated GAPDH expression was found to promote nuclear factor-κB (NF-κB) activation via binding to tumor necrosis factor receptor-associated factor-2 (TRAF2), enhancing the transcription and the activity of hypoxia-inducing factor-1α (HIF-1α). Consistent with this, inactive mutants of GAPDH failed to bind TRAF2, enhance HIF-1 activity or promote lymphomagenesis. Furthermore, elevated expression of gapdh mRNA in biopsies from diffuse large B-cell non-Hodgkin's lymphoma patients correlated with high levels of hif-1α, vegf-a, nfkbia mRNA and CD31 staining. Collectively, these data indicate that deregulated GAPDH expression promotes NF-κB-dependent induction of HIF-1α and has a key role in lymphoma vascularization and aggressiveness.
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Affiliation(s)
- J Chiche
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France
| | - S Pommier
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [3] Centre Hospitalier Universitaire de Nice, Département d'Anesthésie Réanimation, Nice, France
| | - M Beneteau
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France
| | - L Mondragón
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France
| | - O Meynet
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France
| | - B Zunino
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France
| | - A Mouchotte
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France
| | - E Verhoeyen
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France
| | - M Guyot
- 1] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [2] Institute for Research on Cancer and Aging, CNRS UMR 7284/U INSERM 1081, Centre A. Lacassagne, Nice, France
| | - G Pagès
- 1] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [2] Institute for Research on Cancer and Aging, CNRS UMR 7284/U INSERM 1081, Centre A. Lacassagne, Nice, France
| | - N Mounier
- Centre Hospitalier Universitaire de Nice, Département d'Onco-Hématologie, Nice, France
| | - V Imbert
- 1] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [2] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'inflammation, cancer et cellules souches cancéreuses', Nice, France
| | - P Colosetti
- 1] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [2] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'mort cellulaire, différenciation, inflammation et cancer', Nice, France
| | - D Goncalvès
- 1] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [2] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'mort cellulaire, différenciation, inflammation et cancer', Nice, France
| | - S Marchetti
- 1] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [2] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'mort cellulaire, différenciation, inflammation et cancer', Nice, France
| | - J Brière
- AP-HP-Hôpital Saint-Louis, Service d'hémato-Oncologie, Université Paris Diderot, Sorbonne Paris Cité, F-75010 Paris, France
| | - M Carles
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [3] Centre Hospitalier Universitaire de Nice, Département d'Anesthésie Réanimation, Nice, France
| | - C Thieblemont
- AP-HP-Hôpital Saint-Louis, Service d'hémato-Oncologie, Université Paris Diderot, Sorbonne Paris Cité, F-75010 Paris, France
| | - J-E Ricci
- 1] Inserm, U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), équipe 'contrôle métabolique des morts cellulaires', équipe 3, Nice, France [2] Université de Nice-Sophia-Antipolis, Faculté de Médecine, Nice, France [3] Centre Hospitalier Universitaire de Nice, Département d'Anesthésie Réanimation, Nice, France
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13
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14
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Guyot M, Gubernatis P, Suteau C, Tellier RL, Lecerf J. An Assessment of Corewide Coherency Effects in the Multichannel Modeling of the Initiating Phase of a Severe Accident in a Sodium Fast Reactor. NUCL TECHNOL 2014. [DOI: 10.13182/nt12-123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Guyot
- Commissariat à l’É nergie Atomique, DEN/DTN/STRI/LMA, CE de Cadarache, 13115 St. Paul-lez-Durance, France
| | - P. Gubernatis
- Commissariat à l’É nergie Atomique, DEN/DTN/STRI/LMA, CE de Cadarache, 13115 St. Paul-lez-Durance, France
| | - C. Suteau
- Commissariat à l’É nergie Atomique, DEN/DTN/STRI/LMA, CE de Cadarache, 13115 St. Paul-lez-Durance, France
| | - R. Le Tellier
- Commissariat à l’É nergie Atomique, DEN/DTN/STRI/LMA, CE de Cadarache, 13115 St. Paul-lez-Durance, France
| | - J. Lecerf
- Commissariat à l’É nergie Atomique, DEN/DER/SESI/LSMR, CE de Cadarache, 13115 St. Paul-lez-Durance, France
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15
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Malapel-Empis H, Saragoni A, Guyot M, Donze C. Evaluation of user's satisfaction after their first acquisition of an electric-powered wheelchair. Ann Phys Rehabil Med 2013. [DOI: 10.1016/j.rehab.2013.07.374] [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: 10/26/2022]
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16
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Bonnaud I, Rouaud V, Guyot M, Debiais S, Saudeau D, de Toffol B, Farber CM. Exceptional stroke-like episodes in a patient with type I autosomal angioedema. Neurology 2012; 78:598-9. [PMID: 22323759 DOI: 10.1212/wnl.0b013e318247ca58] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- I Bonnaud
- Department of Neurology, University of Tours, France.
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17
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Kauss T, Fawaz F, Guyot M, Lagueny AM, Dos Santos I, Bonini F, Olliaro P, Caminiti A, Millet P. Fixed artesunate-amodiaquine combined pre-formulation study for the treatment of malaria. Int J Pharm 2010; 395:198-204. [PMID: 20635516] [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: 05/29/2023]
Abstract
Artemisinin-based combination therapies, including artesunate (AS) + amodiaquine (AQ), are the currently recommended first-line treatment of uncomplicated falciparum malaria. Fixed-dose co-formulations offer logistic and adherence advantages. This paper reports the initial research phase of the pre-development process of an AS-AQ formulation, further developed by the Drug for Neglected Diseases Initiative (DNDi). Results demonstrate that AS and AQ are not compatible, and AS degradation is related to three main parameters: water content (>1%), elevated temperature (80 degrees C in dry condition) and possibly the 4-aminoquinoline moiety. Furthermore, AS and AQ incompatibility led to AS degradation and pharmaco-technical changes in classical wet granulation tablets. Both active principles are stable as dry powders. These investigations led to further development of various co-formulations, including the bilayer tablet currently on the market.
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Affiliation(s)
- Tina Kauss
- Laboratory of Galenic Pharmacy and Biopharmacy, Bordeaux 2 University, France.
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18
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Kauss T, Fawaz F, Guyot M, Lagueny AM, Dos Santos I, Bonini F, Olliaro P, Caminiti A, Millet P. Fixed artesunate-amodiaquine combined pre-formulation study for the treatment of malaria. Int J Pharm 2010; 395:S0378-5173(10)00400-X. [PMID: 20685236 DOI: 10.1016/j.ijpharm.2010.05.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Revised: 05/20/2010] [Accepted: 05/21/2010] [Indexed: 10/19/2022]
Abstract
Artemisinin-based combination therapies, including artesunate (AS)+amodiaquine (AQ), are the currently recommended first-line treatment of uncomplicated falciparum malaria. Fixed-dose co-formulations offer logistic and adherence advantages. This paper reports the initial research phase of the pre-development process of an AS-AQ formulation, further developed by the Drug for Neglected Diseases Initiative (DNDi). Results demonstrate that AS and AQ are not compatible, and AS degradation is related to three main parameters: water content (>1%), elevated temperature (80 degrees C in dry condition) and possibly the 4-aminoquinoline moiety. Furthermore, AS and AQ incompatibility led to AS degradation and pharmaco-technical changes in classical wet granulation tablets. Both active principles are stable as dry powders. These investigations led to further development of various co-formulations, including the bilayer tablet currently on the market.
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Affiliation(s)
- Tina Kauss
- Laboratory of Galenic Pharmacy and Biopharmacy, Bordeaux 2 University, France
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19
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Guyot M, Allepaerts-Souali M, Moukagni-Pelzer M, El Kohen R, Szymczak J, Kalach N. La pronation douloureuse chez le jeune enfant est fréquente aux urgences pédiatriques. Arch Pediatr 2008; 15:1824-5. [DOI: 10.1016/j.arcped.2008.09.006] [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] [Received: 07/27/2008] [Accepted: 09/08/2008] [Indexed: 11/29/2022]
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20
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Fernandez P, Monet A, Matei C, De Clermont H, Guyot M, Jeandot R, Dutronc H, Dumoulin C, Dupon M, Ducassou D. 99mTc-HMPAO labelled white blood cell scintigraphy in patients with osteoarticular infection: the value of late images for diagnostic accuracy and interobserver reproducibility. Eur J Clin Microbiol Infect Dis 2008; 27:1239-44. [PMID: 18584222 DOI: 10.1007/s10096-008-0563-x] [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] [Received: 02/04/2008] [Accepted: 05/25/2008] [Indexed: 11/29/2022]
Abstract
The objectives of this study were to evaluate the diagnostic value of 99mTc-HMPAO labelled white blood cell scintigraphy (WBCS) in patients with suspected osteomyelitis using late images and to study interobserver reproducibility. This study prospectively included 120 patients, and after a follow-up of one year, only 70 patients (n = 49 with implants, n = 21 without implants) were selected. The final diagnosis of infection was based either on microbiological data (n = 54) or follow-up (n = 16). We performed WBCS with 4 h and 24 h scans. Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 77%, 72%, 83%, 64%, and 75% at 4 h, and 74%, 87%, 91%, 59%, and 79% at 24 h, respectively. The interobserver reproducibility shows a 63% prevalence of agreement between results (kappa = 0.5) at 4 h and 80% (kappa = 0.74) at 24 h, respectively. WBCS with 24-h images improves specificity and interobserver reproducibility in patients with suspected osteoarticular sepsis.
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Affiliation(s)
- P Fernandez
- Service de Médecine Nucléaire, CHRU Bordeaux, Hôpital Pellegrin, Place Amélie Raba-Léon, 33076, Bordeaux Cédex, France.
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21
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Devillers J, Doré JC, Guyot M, Poroikov V, Gloriozova T, Lagunin A, Filimonov D. Prediction of biological activity profiles of cyanobacterial secondary metabolites. SAR QSAR Environ Res 2007; 18:629-643. [PMID: 18038364 DOI: 10.1080/10629360701698704] [Citation(s) in RCA: 8] [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] [Indexed: 05/25/2023]
Abstract
Over the past decade cyanobacteria have become an interesting source of new classes of pharmacologically active natural products. Some cyanobacterial secondary metabolites (CSMs) are also well known for their toxic effects on living species. The PASS (Prediction of Activity Spectra for Substances) computer program, which is able to simultaneously predict more than one thousand biological and toxicological activities from only the structural formulas of the chemicals, was used to predict the biological activity profile of 681 CSMs. Multivariate methods were employed to structure and analyse this wealth of biological and chemical information. PASS predictions were successfully compared to the available information on the pharmacological and toxicological activity of these compounds.
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Affiliation(s)
- J Devillers
- CTIS, 3 Chemin de la Gravière, 69140 Rillieux La Pape, France.
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22
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Fawaz F, Koffi A, Guyot M, Millet P. Comparative in vitro–in vivo study of two quinine rectal gel formulations. Int J Pharm 2004; 280:151-62. [PMID: 15265555 DOI: 10.1016/j.ijpharm.2004.05.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2003] [Revised: 05/05/2004] [Accepted: 05/11/2004] [Indexed: 10/26/2022]
Abstract
The main objective of this work was to develop and evaluate rectal quinine paediatric formulations to treat acute uncomplicated malaria attack in some African countries. Developed dosage forms must be able to assure a prolonged release in the rectum but not too much so as to avoid product expulsion by the child anus. Two quinine rectal gels, namely mucoadhesive (MA) gel and thermosensitive (TS) gel, containing 20 mg quinine base/g were developed and evaluated in vitro and in vivo in the rabbit. The MA and the TS gels contained hydroxypropyl methylcellulose 4000 (HPMC) and poloxamer 407, respectively. The calculated in vitro release exponent (n) values suggested that drug was released from both gels by non-Fickian diffusion. Both gels exhibit practically similar efficient of dissolution (ED%) which was not reflected in the plasma and, therefore, quinine bioavailability from MA gel was found to be higher than that obtained from TS gel and their AUC(0-infinity) were statistically different (P = 0.0006). The t(1/2) values of quinine were significantly higher for Hydrogels than for IV and rectal solutions. MRT values displayed by TS gel and MA gel were not statistically different but were about 3.8- and 1.3-fold, respectively, larger than those obtained for IV solution and rectal solution, respectively. These results confirm the sustained-release behaviour of both hydrogels in the rabbit. Tolerability study of hydrogels didn't show any damage on the rectal mucosa of the rabbit.
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Affiliation(s)
- F Fawaz
- Laboratoire de Pharmacie Galénique et Biopharmacie, EA 3677, Université Victor Segalen Bordeaux 2, 146 Rue Léo Saignat, 33076 Bordeaux Cedex, France.
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24
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Abstract
Recently, two main events have spurred a rapid increase in cyanobacteria chemical, toxicological, and ecological research. The first deals with the interest in isolating compounds from these organisms as source of active products with potential therapeutic applications. The second pertains the crucial problem of harmful cyanobacterial blooms in the aquatic environments. In this context, 594 secondary metabolites belonging to more than 30 genera of cyanobacteria were retrieved from literature. In order to perform their typology, they were first associated with 87 different molecular archetypes and two orphan classes. These 89 groups of molecular structures were then confronted to minimum spanning tree analysis. Attempts were made to graphically derive chemotaxonomical relationships. The interest of QSAR models for estimating the potential pharmacological interest of the cyanobacterial secondary metabolites was also discussed.
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Affiliation(s)
- M Guyot
- Département Régulations, Développement et Diversité Moléculaire, USM 0502, UMR 8041 CNRS, Museum National d'Histoire Naturelle, 63 rue de Buffon, 75005 Paris, France
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25
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Guyot M, Montandon S, Valois MF. Les guides des bonnes pratiques en stomathérapie : un outil pour la prise en charge multi-professionnelle de la personne stomisée. Annales de Chirurgie 2003; 128:642-3. [PMID: 14659623 DOI: 10.1016/s0003-3944(03)00188-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M Guyot
- Association française des entérostoma thérapeutes, Hôtel-Dieu, 1, place de l'Hôpital, 69002, Lyon, France
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Aassila H, Bourguet-Kondracki ML, Rifai S, Fassouane A, Guyot M. Identification of harman as the antibiotic compound produced by a tunicate-associated bacterium. Mar Biotechnol (NY) 2003; 5:163-6. [PMID: 12876652 DOI: 10.1007/s10126-002-0060-7] [Citation(s) in RCA: 19] [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] [Subscribe] [Scholar Register] [Received: 01/28/2002] [Accepted: 04/18/2002] [Indexed: 05/21/2023]
Abstract
The alkaloid harman, previously reported from some marine invertebrates, was identified as the antibiotic substance of the tunicate-associated bacterium Enterococcus faecium. It exhibited antibacterial activity (MIC, 0.017 mM) against the ichthyopathogenic strain Vibrio anguillarum.
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Affiliation(s)
- H Aassila
- Laboratoire de Biochimie Marine, Département de Biologie, Faculté des Sciences, Université Chouaib Doukkali, BP 20 El Jadida, Morocco
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27
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Montandon S, Guyot M, Conge M, Valois MF. [Best practice guidelines in stomatherapy]. Rev Infirm 2002:43-6, 48. [PMID: 12630233] [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: 03/01/2023]
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Abstract
The dichloromethane/methanol extract from the red alga Hypnea musciformis exhibited PPE elastase inhibition. A diketosteroid, the 20-hydroxy-5alpha-cholest-22-ene-3,6-dione was responsible for this activity. Two new steroids were isolated, 2 was assigned as the 6alpha-hydroxy-cholest-4-ene-3-one and 3 as the 6alpha-hydroxy-cholest-4,22-diene-3-one. The structures were assigned mainly on the basis of 1H and 13C NMR experiments.
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Affiliation(s)
- V Bultel-Poncé
- Laboratoire de Chimie des Substances Naturelles associé au CNRS, Muséum National d'Histoire Naturelle, 63 rue Buffon, 75005 Paris, France.
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Poigny S, Nouri S, Chiaroni A, Guyot M, Samadi M. Total synthesis and determination of the absolute configuration of coscinosulfate. A new selective inhibitor of Cdc25 protein phosphatase. J Org Chem 2001; 66:7263-9. [PMID: 11681936 DOI: 10.1021/jo010154c] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first total synthesis of coscinosulfate 1, a metabolite isolated from a sea sponge, starting from (+)-sclareolide 3 is described. The convergent synthesis strategy relies on the coupling of sulfone 21 with the bromide 26. The sulfone fragment 21 was obtained by successive asymmetric aldol reaction with aldehyde 2 to introduce the stereocenters at C-12 and C-13, followed by one-carbon homologation via Horner-Wadsworth-Emmons olefination. The selective sulfatation at C-12 was accomplished through the quinone intermediate 31 obtained by selective oxidation of hydroquinone 30; this, when followed by reduction, furnished the desired coscinosulfate 1. X-ray analysis of the intermediate aldehyde 18 confirmed the proposed structure.
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Affiliation(s)
- S Poigny
- Laboratoire de Chimie des Substances Naturelles, associé au CNRS, Muséum National d'Histoire Naturelle, 63, rue Buffon, F-75005 Paris, France
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30
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Loukaci A, Le Saout I, Samadi M, Leclerc S, Damiens E, Meijer L, Debitus C, Guyot M. Coscinosulfate, a CDC25 phosphatase inhibitor from the sponge Coscinoderma mathewsi. Bioorg Med Chem 2001; 9:3049-54. [PMID: 11597488 DOI: 10.1016/s0968-0896(01)00208-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [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: 11/27/2022]
Abstract
The dual specificity CDC25 phosphatases dephosphorylate two inhibitory phospho-amino acids of cyclin-dependent kinases, a major family of cell cycle regulators. CDC25 inhibitors constitute new anti-mitotic agents with potential anticancer activity. While screening through a collection of natural products derived from marine organisms for CDC25A inhibitors, we purified and identified coscinosulfate 1, a sesquiterpene sulfate from the New Caledonian sponge Coscinoderma matthewsi, along with 4. The purified compound 1 displayed significant inhibitory activity towards CDC25A (IC(50): 3 microM).
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Affiliation(s)
- A Loukaci
- Laboratoire de Chimie des Substances Naturelles, Muséum d'Histoire Naturelle, associé au CNRS, Paris, France
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31
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Abstract
The organic extract of the red alga Sphaerococcus coronopifolius, collected along the Atlantic coast of Morocco, was tested for biological activities and exhibited antibiotic and antimalarial activities. Two new bromoditerpenes have been isolated from S. coronopifolius, sphaerolabdadiene-3,14-diol (1) and bromosphaerone (2), along with the known compounds 12S-hydroxybromosphaerodiol (3) and sphaerococcenol A (4). Bromosphaerone and 12S-hydroxybromosphaerodiol showed antibacterial activity against the Gram-positive bacterium species Staphylococcus aureus with a minimum inhibitory concentration of 0.104 and 0.146 microM, respectively. Sphaerococcenol A (4) was responsible for the antimalarial activity of the extract, against the chloroquine resistant Plasmodium falsciparum FCB1 strains with an IC(50) of 1 microM. Their structures have been assigned using 1 and 2 D NMR and HRMS.
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Affiliation(s)
- S Etahiri
- Laboratoire de Biochimie Marine, Faculté des Sciences, Université Chouaib Doukkali, BP 20, El Jadida, Maroc
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32
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Abstract
A new cytotoxic oxysterol, 16beta-hydroxy-5alpha-cholestane-3,6-dione was isolated from the red alga Jania rubens. Its structure was established by spectroscopic method. The ID50 value was 0.5 microg/mL.
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Affiliation(s)
- L Ktari
- Laboratoire de Chimie des Substances Naturelles, associé au CNRS, Muséum National d'Histoire Naturelle, Paris, France
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Martel J, Duclos JY, Darrouzet V, Guyot M, Bébéar JP. [Malignant or necrotizing otitis externa: experience in 22 cases]. Ann Otolaryngol Chir Cervicofac 2000; 117:291. [PMID: 11084403] [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: 02/18/2023]
Abstract
Malignant or progressive necrotizing otitis extrema is an uncommon but severe infectious condition of the external auditory canal. Over a period of four years, we treated 22 patients: 60% had diabetes (1/4 insulin dependent) and 13% were immunodepressed. The causal germ was Pseudomonas aeruginosa in 87% of cases. The pretherapeutic work-up included a computed tomography scan and a technetium scintigraphy to confirm diagnosis and assess extension. Repeated scintigraphies with gallium were used to follow the course under treatment. Medical treatment was used in most cases (16/22) with parenteral antibiotic therapy using a third-generation cephalosporin (ceftazidime or ceftriaxone) and a fluoroquinolone (ciprofloxacin or ofloxacin) and, if there was no contraindication, hyperbaric oxygen. Surgery is not indicated in malignant otitis externa. We had a 95% cure rate with only 10% recurrence. We reviewed the data in the literature on malignant otitis externa and present the important diagnostic, imaging and therapeutic aspects.
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Affiliation(s)
- J Martel
- Service d'ORL et de chirurgie cervico-faciale, Service de médecine nucléaire, Hôpital Pellegrin C.H.U. de Bordeaux, 33076 Bordeaux Cedex
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Abstract
Propranolol hydrochloride, a water-soluble drug, was incorporated in three transdermal delivery systems using three polymers (hydroxypropylmethylcellulose, polyisobutylene and Ucecryl MC808). The influence of different factors (polymeric material, matrix thickness, drug content, thickness of the adhesive layer and presence of a dissolution enhancer) was investigated. Microscopic observations and DSC thermograms have permitted to demonstrate that propranolol was essentially dissolved in the HPMC matrix and dispersed in the two other matrix types. In vitro dissolution study was carried out according to European Pharmacopoeia. Release from HPMC matrices without adhesive coating was fast. Release from these matrices became more regular (reduction of the burst effect) and slow when they are coated with a 12 microm thick Ucecryl layer. Release from different PIB matrices was too slow to be suitable as TDDS for propranolol. The best release modulation was obtained from Ucecryl matrices. In all matrices types, propylene glycol accelerated propranolol release rate. The kinetic of drug release from most matrix types was more closely described by the square-root model (Higuchi).
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Affiliation(s)
- M Guyot
- Laboratoire de Pharmacie Galénique et Biopharmacie, Equipe d'accueil EA7525, Université Victor Segalen Bordeaux 2, Bordeaux, France.
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35
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Abstract
Cystodytes cf. dellechiajei collected off Djerba furnished new lipids, sphingosines 1, as inhibitors of phospholipase A2, along with inactive homologous ceramides 2. Structures were determined by spectroscopic methods and chemical transformations.
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Affiliation(s)
- A Loukaci
- Laboratoire de Chimie des Substances Naturelles, ESA 8041 CNRS, Museum National d'Histoire Naturelle, 63 Rue Buffon, F-75005 Paris, France
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36
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Fernandez P, Guyot M, Mangione P, Valli N, Basse-Cathalinat B, Ducassou D. Subarachnoid-pleural fistula complicating thoracoscopy: value of In-111 DTPA myeloscintigraphy. Clin Nucl Med 1999; 24:985-6. [PMID: 10595487 DOI: 10.1097/00003072-199912000-00021] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- P Fernandez
- Nuclear Medicine, Groupe Hospitalier Pellegrin, Bordeaux, France
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Bourguet-Kondracki ML, Lacombe F, Guyot M. Methanol adduct of puupehenone, a biologically active derivative from the marine sponge Hyrtios species. J Nat Prod 1999; 62:1304-1305. [PMID: 10514320 DOI: 10.1021/np9900829] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [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
A methanol adduct of puupehenone (1), 15alpha-methoxypuupehenol (2), an artifact resulting from the action of MeOH on puupehenone, was isolated during purification of the CH(2)Cl(2) extract of the New Caledonian marine sponge Hyrtios sp., as the major constituent. Its chemical structure was elucidated by 2D NMR experiments. Compound 2 displayed similar antimicrobial and antifungal activity as puupehenone and a lower cytotoxic activity toward KB cells with ED(50) values of 6 and 0.5 microg/mL, respectively. Compound 2 was slightly more active against three strains of Plasmodium falciparum than puupehenone.
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Affiliation(s)
- M L Bourguet-Kondracki
- Laboratoire de Chimie des Substances Naturelles, Associé au CNRS, Muséum National d'Histoire Naturelle, 63 Rue Buffon, 75005 Paris, France
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38
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Catargi B, Leprat F, Guyot M, Valli N, Ducassou D, Tabarin A. Optimized radioiodine therapy of Graves' disease: analysis of the delivered dose and of other possible factors affecting outcome. Eur J Endocrinol 1999; 141:117-21. [PMID: 10427153 DOI: 10.1530/eje.0.1410117] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The best approach to radioiodine dose selection in the treatment of Graves' hyperthyroidism remains highly controversial. The formula to calculate the individual dose of (131)I to be delivered has been used for half a century and takes into account the thyroid mass, the effective half-life and the maximum uptake of (131)I. The objective of the present study was to evaluate the accuracy of this formula by determining the relationship between the administered dose of (131)I calculated to deliver a target dose of 50Gy to the thyroid and the actual exact organ dose. We further analyzed if therapeutic success, defined by euthyroidism following the individually calculated dose, can be predicted by different pretreatment parameters and particularly by organ dose. One hundred patients with a first episode of Graves' disease and who had received optimal thyroid irradiation after precise dosimetry were retrospectively reviewed. The patients were categorized according to their thyroid function (plasma free thyroxine (T(4)) serum concentration) as eu-, hyper- or hypothyroid during and 1 year after treatment. The relationship between the administered dose and organ dose was assessed by simple regression. We compared free T(4), free tri-iodothyronine, thyroid weight, the number of patients with antithyroperoxidase antibodies and TSH receptor autoantibodies, 24h urinary iodine excretion, (131)I uptake, and the exact dose of (131)I delivered to the thyroid as pretreatment variables. Although we found a correlation between administered dose (mCi) and organ dose (Gy) (r=0.3, P=0.003), the mean coefficient of variation for organ dose was 45%. Individualized radioiodine therapy enabled euthyroidism in 26% of patients and failed in 74% of patients (33% had persistent or recurrent hyperthyroidism and 41% permanent hypothyroidism). (131)I uptake was significantly higher in the hyperthyroidism group in comparison with the euthyroid group. However, organ dose and other pretreatment variables did not differ among the three groups. In conclusion, these results confirm the low performance of individual dosimetry using what are established ratios, since the delivered dose to the gland, although correlated to the intended dose, is highly variable. The finding that other usual pretreatment variables are not different between groups, gives little hope for improving the way of calculating the ideal dose of radioiodine. We suggest to those not yet ready to give a standard or an ablative dose for Graves' hyperthyroidism that they abandon this way to calculate the (131)I dose.
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Affiliation(s)
- B Catargi
- Department of Endocrinology, University Hospital of Bordeaux, Bordeaux, France
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39
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Bôll G, Conge M, Guyot M, Marquet JM, Montandon S. [The enterostoma therapists]. Rev Infirm 1999:36-9. [PMID: 10765357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- G Bôll
- l'école de stomathérapie de Nîmes
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40
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Bultel-Poncé V, Berge JP, Debitus C, Nicolas JL, Guyot M. Metabolites from the Sponge-Associated Bacterium Pseudomonas Species. Mar Biotechnol (NY) 1999; 1:384-390. [PMID: 10489417 DOI: 10.1007/pl00011792] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
: Quinolones and a phosphatidyl glyceride were isolated from the sponge-associated bacterial strain Pseudomonas sp. Structures were elucidated by spectroscopic analysis and chemical transformations.
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Affiliation(s)
- V Bultel-Poncé
- Laboratoire de Chimie du Muséum National d'Histoire Naturelle, Associé au CNRS, 63 rue Buffon, 75005 Paris, France
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41
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Bôll G, Conge M, Guyot M, Marquet JM, Montandon S. [Collecting devices and skin protectors]. Rev Infirm 1999:23-31. [PMID: 10765355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- G Bôll
- l'école de stomathérapie de Nîmes
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42
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Valli N, Catargi B, Ronci N, Leccia F, Guyot M, Roger P, Ducassou D, Tabarin A. Evaluation of indium-111 pentetreotide somatostatin receptor scintigraphy to detect recurrent thyroid carcinoma in patients with negative radioiodine scintigraphy. Thyroid 1999; 9:583-9. [PMID: 10411121 DOI: 10.1089/thy.1999.9.583] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [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: 11/13/2022]
Abstract
The follow-up of patients who underwent thyroidectomy for differentiated thyroid carcinoma is based on the combination of serum thyroglobulin (Tg) measurement and radioiodine total-body scan (ITBS). The diagnostic strategy to be used in patients with elevated serum Tg level but negative ITBS remains debatable. Somatostatin receptor scintigraphy (SRS) has been proposed. Our objective was to compare the results of SRS and conventional radiological imaging (CRI) for the diagnosis of recurrent disease and/or metastases in 15 patients who had had thyroidectomy for differentiated carcinoma (14 papillary, 1 Hurthle cell carcinoma) and who displayed elevated Tg levels (10 to 65000 ng/mL) together with negative ITBS performed after 100 mCi. All patients underwent SRS and CRI within 3 months, allowing comparison of the 2 approaches for the identification of thyroid carcinoma metastases. CRI first included a chest x-ray and ultrasonography of the neck. It was followed by computed tomography (CT) scanning and/or magnetic resonance imaging (MRI) of the neck, chest and occasionally abdomen, and 99mTc bone scintigraphy in case of negative results. In 6 patients with Tg levels ranging from 65 to 65000 ng/mL, CRI detected 12 histologically proven metastases among 9 organs. Among these patients, SRS identified only 6 metastases. SRS identified 1 case of mediastinal recurrence that was not detected by CRI. In another patient with a Tg level of 51 ng/mL, a cervical node was identified using both SRS and CRI but proved to be a false-positive (inflammatory cervical node). In the other 8 patients with Tg levels ranging from 10 to 580 ng/mL, SRS and CRI were negative, and the source of Tg secretion remains unknown. The results of SRS did not correlate with serum Tg level. In conclusion, the diagnostic accuracy of SRS in this study was disappointing and clearly lower than that of CRI. Our results do not support the use of SRS as a guide conventional imaging modalities in patients operated on for differentiated thyroid carcinoma who display elevated Tg levels together with negative ITBS.
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Affiliation(s)
- N Valli
- Service de Médecine Nucléaire, Hôpital du Haut Lévèque CHU de Bordeaux, Pessac, France
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Leprat F, Bonichon F, Guyot M, Trouette H, Trojani M, Vergnot V, Longy M, Belleannée G, de Mascarel A, Roger P. Familial non-medullary thyroid carcinoma: pathology review in 27 affected cases from 13 French families. Clin Endocrinol (Oxf) 1999; 50:589-94. [PMID: 10468924 DOI: 10.1046/j.1365-2265.1999.00687.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [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: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVES When familial non-medullary thyroid cancer (FNMTC) develops with no obvious associated pathogenetic factor, an inherited predisposition may underlie the process. The present study was conducted because detailed pathological findings are lacking in most series of FNMTC. PATIENTS AND METHODS Thirteen families comprising 27 cases of FNMTC were included (1.8% of differentiated thyroid carcinoma). The family relationship (20 F, 7 M; age 46 +/- 16 years; mean +/- SD) was 'siblings' in eight families, 'parent and child' in four and 'aunt and niece' in one. Careful pathological review of the thyroid tumours (papillary/follicular: 25/2, size: 16 +/- 11 mm) was performed. RESULTS Initial staging according to extension was as follows: grade I (n = 16), II (n = 2), III (n = 6), IV (n = 3). Fourteen tumours were papillary microcarcinomas (size: 8 +/- 2 mm). No tumour phenotype that may be considered specific for FNMTC was found when considering either age, pathological findings or tumour aggressiveness. Although rare events were found in both relatives of some families suggesting a putative 'familial' phenotype of FNMTC, this may be fortuitous. CONCLUSION Micro familial non-medullary thyroid cancers are more common than previously reported and further studies are required to be able to distinguish this subgroup from sporadic papillary microcarcinomas. The careful pathological review of the familial non-medullary thyroid cancer in this study does not seem to point to a distinct subgroup of familial differentiated thyroid carcinoma although the data are intriguing. Genetic studies are now required to investigate this issue.
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Affiliation(s)
- F Leprat
- Department of Endocrinology, Hopital Haut Lévèque, Pessac, France
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Guyot M, Montandon S. [Psychology. Towards the restitution of the stoma patient's autonomy]. Soins 1999:20-1. [PMID: 10410108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- M Guyot
- Centre de stomathérapie G. Guillemin, Lyon
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45
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Sermet-Gaudelus I, Stoven V, Annereau JP, Witko-Sarsat V, Reinert P, Guyot M, Descamps-Latscha B, Lallemand JY, Lenoir G. Interest of colchicine for the treatment of cystic fibrosis patients. Preliminary report. Mediators Inflamm 1999; 8:13-5. [PMID: 10704084 PMCID: PMC1781779 DOI: 10.1080/09629359990667] [Citation(s) in RCA: 17] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Cystic fibrosis (CF) lung disease is characterized by persistent inflammation. Antiinflammatory drugs, such as corticosteroids and ibuprofen, have proved to slow the decline of pulmonary function although their use is limited because of frequent adverse events. We hypothesized that colchicine could be an alternative treatment because of its antiinflammatory properties and upregulatory effect on cystic fibrosis transmembrane regulator (CFTR) closely related proteins. We herein present results obtained in an open study of eight CF children treated with colchicine for at least 6 months. Clinical status was better in all patients and respiratory function tests significantly improved in five. Median duration of antibiotherapy decreased significantly. These preliminary results support our hypothesis of a beneficial effect of colchicine in CF patients and stress the need for a controlled therapeutic trial.
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Affiliation(s)
- I Sermet-Gaudelus
- Service de Pédiatrie II, Hôpital Necker-Enfants Malades, Paris, France
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Guyot M, Montandon S. [Who are the patients with ostomies?]. Soins 1999:12-4. [PMID: 10410106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- M Guyot
- Centre de stomathérapie G. Guillemin, Lyon
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Guyot M. [Improve our investment in our field of competence]. Soins 1999:24. [PMID: 10410110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Poüs C, Chabin K, Drechou A, Barbot L, Phung-Koskas T, Settegrana C, Bourguet-Kondracki ML, Maurice M, Cassio D, Guyot M, Durand G. Functional specialization of stable and dynamic microtubules in protein traffic in WIF-B cells. J Cell Biol 1998; 142:153-65. [PMID: 9660870 PMCID: PMC2133029 DOI: 10.1083/jcb.142.1.153] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [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] [Indexed: 02/08/2023] Open
Abstract
We found that the magnesium salt of ilimaquinone, named 201-F, specifically disassembled dynamically unstable microtubules in fibroblasts and various epithelial cell lines. Unlike classical tubulin- interacting drugs such as nocodazole or colchicine which affect all classes of microtubules, 201-F did not depolymerize stable microtubules. In WIF-B-polarized hepatic cells, 201-F disrupted the Golgi complex and inhibited albumin and alpha1-antitrypsin secretion to the same extent as nocodazole. By contrast, 201-F did not impair the transport of membrane proteins to the basolateral surface, which was only affected by the total disassembly of cellular microtubules. Transcytosis of two apical membrane proteins-the alkaline phosphodiesterase B10 and dipeptidyl peptidase IV-was affected to the same extent by 201-F and nocodazole. Taken together, these results indicate that only dynamically unstable microtubules are involved in the transport of secretory proteins to the plasma membrane, and in the transcytosis of membrane proteins to the apical surface. By contrast, stable microtubules, which are not functionally affected by 201-F treatment, are involved in the transport of membrane proteins to the basolateral surface. By specifically disassembling highly dynamic microtubules, 201-F is an invaluable tool with which to study the functional specialization of stable and dynamic microtubules in living cells.
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Affiliation(s)
- C Poüs
- Laboratoire de Biochimie Générale, Equipe d'Accueil 1595, Unité de Formation et de Recherche de Pharmacie, Université Paris-Sud, 92296 Châtenay-Malabry, France
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50
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Guyot M. [The clinical certificate in stoma therapy]. Rev Infirm 1997:41-2. [PMID: 9277326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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