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Lefort H, Travers S, Ernouf C, Maurin O, Distinguin B, Fontaine E, Lemaire M, Margerin S, Jost D, Tourtier J, Domanski L. The Role of Hemostatic Product-Impregnated Dressings in the Pre-Hospital Control of External Bleeding. Prospective Observational Study. J Emerg Med 2014. [DOI: 10.1016/j.jemermed.2013.11.035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Montagut-Romans A, Boulven M, Lemaire M, . Popowycz F. Efficient C-3 reductive alkylation of 4-hydroxycoumarin by dehydrogenative oxidation of benzylic alcohols through ruthenium catalysis. NEW J CHEM 2014. [DOI: 10.1039/c3nj01517c] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Lemaire M, Nagnan P, Clement JL, Lange C, Peru L, Basselier JJ. Geranyllinalool (Diterpene Alcohol) : An insecticidal component of pine wood and termites (Isoptera: Rhinotermitidae) in four European ecosystems. J Chem Ecol 2013; 16:2067-79. [PMID: 24264007 DOI: 10.1007/bf01020517] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/1988] [Accepted: 11/28/1989] [Indexed: 11/26/2022]
Abstract
Geranyllinalool is an insecticidal component of pine wood and of the defensive secretion ofReticulitermes species. Lethal doses (LD50) were calculated for termites and various ant species. Termite workers were very resistant (10,000 ppm). Ant resistance varies among species according to their trophic strategy and attack mode. The geranyllinalool acts as a natural insecticide against some ant predators (LD50=6 ppm), which use raid or chemical crypsis to invade termite nests. In contrast, predators laying the venom on the cuticle of their termite prey were very resistant (10,000 ppm). Generally, ants acting as space competitors could detoxify the quantity emitted by one termite soldier (18 ppm).
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Vaglio–Gaudard C, Leray O, Lemaire M, Colombier A, Hudelot J. First feedback with the AMMON integral experiment for the JHR calculations. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20134205001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Colombier AC, Amharrak H, Fourmentel D, Ravaux S, Régnier D, Gueton O, Hudelot JP, Lemaire M. Nuclear data production, calculation and measurement: a global overview of the gamma heating issue. EPJ WEB OF CONFERENCES 2013. [DOI: 10.1051/epjconf/20134204001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Simon G, Eljezi T, Legeret B, Charmantray F, Castillo JA, Guérard-Hélaine C, Lemaire M, Bouzon M, Marlière P, Hélaine V, Hecquet L. Synthesis of Specially Designed Probes to Broaden Transketolase Scope. ChemCatChem 2013. [DOI: 10.1002/cctc.201200479] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Audoin B, Crespy L, Zaaraoui W, Lemaire M, Jure L, Rico A, Faivre A, Reuter F, Malikova I, Cozzone P, Ranjeva JP, Pelletier J. Détection des anomalies individuelles de la substance grise au stade précoce de la sclérose en plaques par cartographie statistique des cartes de taux de transfert d’aimantation. Rev Neurol (Paris) 2012. [DOI: 10.1016/j.neurol.2012.01.511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Irani Y, Pype JL, Martin AR, Chong CF, Daniel L, Gaudart J, Ibrahim Z, Magalon G, Lemaire M, Hardwigsen J. Noble gas (argon and xenon)-saturated cold storage solutions reduce ischemia-reperfusion injury in a rat model of renal transplantation. NEPHRON EXTRA 2012; 1:272-82. [PMID: 22470401 PMCID: PMC3290848 DOI: 10.1159/000335197] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Following kidney transplantation, ischemia-reperfusion injury contributes to adverse outcomes. The purpose of this study was to determine whether a cold-storage solution saturated with noble gas (xenon or argon) could limit ischemia-reperfusion injury following cold ischemia. METHODS Sixty Wistar rats were randomly allocated to 4 experimental groups. Kidneys were harvested and then stored for 6 h before transplantation in cold-storage solution (Celsior®) saturated with either air, nitrogen, xenon or argon. A syngenic orthotopic transplantation was performed. Renal function was determined on days 7 and 14 after transplantation. Transplanted kidneys were removed on day 14 for histological and immunohistochemical analyses. RESULTS Creatinine clearance was significantly higher and urinary albumin significantly lower in the argon and xenon groups than in the other groups at days 7 and 14. These effects were considerably more pronounced for argon than for xenon. In addition, kidneys stored with argon, and to a lesser extent those stored with xenon, displayed preserved renal architecture as well as higher CD-10 and little active caspase-3 expression compared to other groups. CONCLUSION Argon- or xenon-satured cold-storage solution preserved renal architecture and function following transplantation by reducing ischemia-reperfusion injury.
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Lemaire M, Lemarié CA, Molina MF, Schiffrin EL, Lehoux S, Mann KK. Exposure to moderate arsenic concentrations increases atherosclerosis in ApoE-/- mouse model. Toxicol Sci 2011; 122:211-21. [PMID: 21512104 DOI: 10.1093/toxsci/kfr097] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Arsenic is a widespread environmental contaminant to which millions of people are exposed worldwide. Exposure to arsenic is epidemiologically linked to increased cardiovascular disease, such as atherosclerosis. However, the effects of moderate concentrations of arsenic on atherosclerosis formation are unknown. Therefore, we utilized an in vivo ApoE(-/-) mouse model to assess the effects of chronic moderate exposure to arsenic on plaque formation and composition in order to facilitate mechanistic investigations. Mice exposed to 200 ppb arsenic developed atherosclerotic lesions, a lower exposure than previously reported. In addition, arsenic modified the plaque content, rendering them potentially less stable and consequently, potentially more dangerous. Moreover, we observed that the lower exposure concentration was more atherogenic than the higher concentration. Arsenic-enhanced lesions correlated with several proatherogenic molecular changes, including decreased liver X receptor (LXR) target gene expression and increased proinflammatory cytokines. Significantly, our observations suggest that chronic moderate arsenic exposure may be a greater cardiovascular health risk than previously anticipated.
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Czerwinski KR, Draye M, Favre-Réguillon A, Foos J, Guy A, Lemaire M. Ion Selective Resins: Development and Applications for Nuclear Waste Management. ACTA ACUST UNITED AC 2011. [DOI: 10.1557/proc-556-1277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AbstractOrganic based ion selective resins have some similar attributes: case of synthesis, high metal ion complexation ability, and flexibility for different nuclear waste management applications. For most chelating polymers, the ligand is deemed to be of primary importance for the interaction with the targeted metal ion. The role of the polymer matrix is usually ignored. For ion specific resins, the polymer structure is formed to a specific metal ion. Using the molecular imprinting technique, resins can be formed with functional groups and cavities for a target metal ion. Ion selective resins have been developed for the separation of Cs. The methods and concepts used for the development of the Cs specific resins have been applied to the development of selective resins for Eu (a trivalent actinide model). The resulting resins are characterized by FTIR spectroscopy, moisture regain, and ion exchange capacity. The incorporation of 8-hydroxyquinoline into the resin increases selectivity for Eu over La. The results for the Eu study indicate ion specific resins can be developed for the separation of trivalent actinides from nuclear waste.
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Sorin A, Pellet-Rostaing S, Favre-Reguillon A, Lemaire M. Cs+/Na+ Separation by Nanofiltration-Complexation with Resorcinarene. SEP SCI TECHNOL 2010. [DOI: 10.1081/ss-200026721] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Borrini J, Bernier G, Pellet-Rostaing S, Favre-Reguillon A, Lemaire M. Separation of lanthanides(III) by inorganic nanofiltration membranes using a water soluble complexing agent. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2009.10.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lemaire M, Momparler LF, Farinha NJ, Bernstein M, Momparler RL. Enhancement of Antineoplastic Action of 5-Aza-2′-deoxycytidine by Phenylbutyrate on L1210 Leukemic Cells. Leuk Lymphoma 2009; 45:147-54. [PMID: 15061212 DOI: 10.1080/1042819031000149304] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Epigenetic changes, such as aberrant DNA methylation that silences tumor suppressor genes (TSGs), can play an important role in the development of leukemia. The DNA methylation inhibitor, 5-aza-2'-deoxycytidine (5-AZA-CdR), can reactivate these silent TSGs and is an interesting agent to investigate for therapy of leukemia. It has been reported that the effectiveness of 5-AZA-CdR to reactivate TSG can be enhanced by inhibitors of histone deacetylase (HDIs). HDIs can convert a compact chromatin structure to an open configuration that facilitates gene expression. An interesting HDI is phenylbutyrate (PB), which has shown some clinical activity for the therapy of leukemia. In this report we have investigated the antineoplastic activity of 5-AZA-CdR and PB alone and in combination on murine L1210 lymphoid leukemic cells. The in vitro treatment of 5-AZA-CdR and PB in combination produced a greater inhibition of growth, DNA synthesis, and also a greater reduction on colony formation on both L1210 and human HL-60 leukemic cells as compared to either drug alone. The combination also produced a synergistic activation of the TSG, p15CDN2B, in the L1210 cells. In mice with L1210 leukemia the combination showed enhanced antineoplastic activity. We also observed an enhancement of the antineoplastic activity of this combination in mice with L1210 leukemia. These data provide a rationale to investigate 5-AZA-CdR and PB in patients with advanced leukemia.
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Deleu S, Lemaire M, Arts J, Menu E, Van Valckenborgh E, King P, Vande Broek I, De Raeve H, Van Camp B, Croucher P, Vanderkerken K. The effects of JNJ-26481585, a novel hydroxamate-based histone deacetylase inhibitor, on the development of multiple myeloma in the 5T2MM and 5T33MM murine models. Leukemia 2009; 23:1894-903. [DOI: 10.1038/leu.2009.121] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Niderkorn V, Morgavi D, Aboab B, Lemaire M, Boudra H. Cell wall component and mycotoxin moieties involved in the binding of fumonisin B1and B2by lactic acid bacteria. J Appl Microbiol 2009; 106:977-85. [DOI: 10.1111/j.1365-2672.2008.04065.x] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lemaire M, Chabot GG, Raynal NJ, Momparler LF, Hurtubise A, Bernstein ML, Momparler RL. Importance of dose-schedule of 5-aza-2'-deoxycytidine for epigenetic therapy of cancer. BMC Cancer 2008; 8:128. [PMID: 18454857 PMCID: PMC2386792 DOI: 10.1186/1471-2407-8-128] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Accepted: 05/02/2008] [Indexed: 12/31/2022] Open
Abstract
Background The inactivation of tumor suppressor genes (TSGs) by aberrant DNA methylation plays an important role in the development of malignancy. Since this epigenetic change is reversible, it is a potential target for chemotherapeutic intervention using an inhibitor of DNA methylation, such as 5-aza-2'-deoxycytidine (DAC). Although clinical studies show that DAC has activity against hematological malignancies, the optimal dose-schedule of this epigenetic agent still needs to be established. Methods Clonogenic assays were performed on leukemic and tumor cell lines to evaluate the in vitro antineoplastic activity of DAC. The reactivation of TSGs and inhibition of DNA methylation by DAC were investigated by reverse transcriptase-PCR and Line-1 assays. The in vivo antineoplastic activity of DAC administered as an i.v. infusion was evaluated in mice with murine L1210 leukemia by measurement of survival time, and in mice bearing murine EMT6 mammary tumor by excision of tumor after chemotherapy for an in vitro clonogenic assay. Results Increasing the DAC concentration and duration of exposure produced a greater loss of clonogenicity for both human leukemic and tumor cell lines. The reactivation of the TSGs (p57KIP2 in HL-60 leukemic cells and p16CDKN2A in Calu-6 lung carcinoma cells) and the inhibition of global DNA methylation in HL-60 leukemic cells increased with DAC concentration. In mice with L1210 leukemia and in mice bearing EMT6 tumors, the antineoplastic action of DAC also increased with the dose. The plasma level of DAC that produced a very potent antineoplastic effect in mice with leukemia or solid tumors was > 200 ng/ml (> 1 μM). Conclusion We have shown that intensification of the DAC dose markedly increased its antineoplastic activity in mouse models of cancer. Our data also show that there is a good correlation between the concentrations of DAC that reduce in vitro clonogenicity, reactivate TSGs and inhibit DNA methylation. These results suggest that the antineoplastic action of DAC is related to its epigenetic action. Our observations provide a strong rationale to perform clinical trials using dose intensification of DAC to maximize the chemotherapeutic potential of this epigenetic agent in patients with cancer.
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Alame M, Jahjah M, Berthod M, Lemaire M, Meille V, de Bellefon C. New 5,5′-disubstituted BINAP derivatives: Syntheses and pressure and electronic effects in Rh asymmetric hydrogenation. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2006.12.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Favre-Réguillon A, Fiaty K, Laurent P, Poriel L, Pellet-Rostaing S, Lemaire M. Solid/Liquid Extraction of Zirconium and Hafnium in Hydrochloric Acid Aqueous Solution with Anion Exchange ResinKinetic Study and Equilibrium Analyses. Ind Eng Chem Res 2007. [DOI: 10.1021/ie060444p] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bouquet M, Guy A, Lemaire M, Guetté JP. Preparation of Alkylarylcarbinols by Mono-Oxydation at the Benzylic Position Using 2,3-Dichloro-5,6-Dicyanobenzoquinone (D.D.Q.). SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397918508077258] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Poriel L, Pellet‐Rostaing S, Lamotte V, Lemaire M, Favre‐Réguillon A. Zirconium and Hafnium Separation, Part 2. Solid/Liquid Extraction in Hydrochloric Acid Aqueous Solution with Anion Exchange Resins. SEP SCI TECHNOL 2006. [DOI: 10.1080/01496390600725711] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Poriel L, Chitry F, Pellet‐Rostaing S, Lemaire M, Favre‐Réguillon A. Zirconium and Hafnium Separation, Part 3. Ligand‐Enhanced Separation of Zirconium and Hafnium from Aqueous Solution using Nanofiltration. SEP SCI TECHNOL 2006. [DOI: 10.1080/01496390600725810] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sorin A, Favre-Réguillon A, Pellet-Rostaing S, Bernier G, Lemaire M. Polyaminocarboxylic acids rejection by charged nanofiltration membrane. J Memb Sci 2006. [DOI: 10.1016/j.memsci.2005.12.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Poriel L, Favre‐Réguillon A, Pellet‐Rostaing S, Lemaire M. Zirconium and Hafnium Separation, Part 1. Liquid/Liquid Extraction in Hydrochloric Acid Aqueous Solution with Aliquat 336. SEP SCI TECHNOL 2006. [DOI: 10.1080/01496390600725802] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lemaire M, Momparler LF, Bernstein ML, Marquez VE, Momparler RL. Enhancement of antineoplastic action of 5-aza-2???-deoxycytidine by zebularine on L1210 leukemia. Anticancer Drugs 2005; 16:301-8. [PMID: 15711182 DOI: 10.1097/00001813-200503000-00009] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Tumor suppressor genes that have been silenced by aberrant DNA methylation are potential targets for reactivation by novel chemotherapeutic agents. The potent inhibitor of DNA methylation and antileukemic agent, 5-aza-2'-deoxycytidine (5-AZA-CdR, Decitabine), can reactivate silent tumor suppressor genes. One hindrance to the curative potential of 5-AZA-CdR is its rapid in vivo inactivation by cytidine deaminase (CD). An approach to overcome this obstacle is to use 5-AZA-CdR in combination with zebularine (Zeb), a potent inhibitor of CD. Zeb also possesses independent antineoplastic activity due to its inhibition of DNA methylation. We tested the capacity of 5-AZA-CdR and Zeb alone and in combination to inhibit growth and colony formation of different leukemic cell lines. 5-AZA-CdR and Zeb in combination produced a greater inhibition of growth against murine L1210 lymphoid leukemic cells, and a greater reduction in colony formation by L1210 and human HL-60 myeloid leukemic cells, than either agent alone. The ability of these agents to reactivate the tumor suppressor gene, p57KIP2, was also tested using RT-PCR. The combination produced a synergistic reactivation of p57KIP2 in HL-60 leukemic cells. A methylation-specific PCR assay showed that this combination also induced a significantly greater demethylation level of the p57KIP2 promoter than either drug alone. The in vivo antineoplastic activity of the agents was evaluated in mice with L1210 leukemia. A greater increase in survival time of mice with L1210 leukemia was observed with the combination than with either agent alone using three different dose schedules. The enhanced activity observed with 5-AZA-CdR plus Zeb in both murine and human leukemic cells lines provides a rationale for the clinical investigation of these drugs in patients with advanced leukemia. The probable mechanism of this drug interaction involves inhibition of CD by Zeb and the complementary inhibition of DNA methylation by both agents.
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Abstract
A patient presented with cholera and a severe degree of ECF volume contraction. Despite large losses of bicarbonate (HCO3-)-containing diarrhoeal fluid, laboratory acid-base values were remarkably close to normal. A detailed analysis emphasizing principles of physiology and a quantitative approach provided new insights and eventually better definitions of metabolic and respiratory acidosis. A shift in focus from HCO3- concentration to HCO3- content in the extracellular fluid (ECF) compartment revealed the presence of metabolic acidosis. Central to this analysis was an emphasis on the haematocrit to enable a more accurate estimate of the degree of ECF volume contraction. The latter also revealed 'contraction' metabolic alkalosis, which masked the underlying metabolic acidosis. The presence of a respiratory acidosis of the tissue type was evident from the raised venous PCO2, which was not surprising once the magnitude of the ECF contraction had been appreciated. 'Bad buffering', as defined by Professor McCance, was the immediate danger and prompted swift action to restore an effective circulation. The haematocrit and the venous PCO2 also contribute valuable information to monitor the response to therapy. Nevertheless, there were still dangers to be discovered when an in-depth analysis suggested that the administration of isotonic saline would introduce an unanticipated danger for the patient.
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