1
|
Fémy F, Meesemaecker G, Belverge N, Courageux C, Nervo A, Goulay R, Reymond C, Chantegreil F, Madi M, Nachon F, Taudon N, Jaffré N. Toxicokinetics of plasmatic VX in a swine model: comparison of a simple enzymatic titration method with a mass spectrometry method. Arch Toxicol 2022; 97:10.1007/s00204-022-03408-w. [PMID: 36326899 DOI: 10.1007/s00204-022-03408-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 10/24/2022] [Indexed: 11/05/2022]
Abstract
Recent events have shown that organophosphorus nerve agents (OPNAs) are a serious threat. Cholinesterase inhibition by OPNAs results in acetylcholine accumulation, a cholinergic crisis leading to death if untreated. Efficacy assessment of new medical countermeasures against OPNAs relies on translational animal models. We developed a swine model of percutaneous VX intoxication and a simple plate reader-based enzymatic method to quantify plasmatic VX over time. Juvenile pigs anesthetized with sevoflurane were poisoned with a single supralethal (n = 5; 1200 μg/kg) or sublethal (n = 6; 320 μg/kg) percutaneous dose of VX. These intoxicated animals were compared to 7 control animals. Repeated blood sampling was performed up to 6 h post-intoxication. Blood cholinesterase activities were measured using the Ellman assay. Nanomolar plasma concentrations of VX were measured by exogenous butyrylcholinesterase added to an aliquot of plasma. As expected, we observed a steady increase in plasma concentration of VX over time concomitant to a decrease in blood cholinesterase activities for all intoxicated pigs. Despite the simplicity of the enzymatic method, the results obtained are in good agreement with those of the liquid chromatography-mass spectrometry method. This method is also applicable to other OPNAs such as novichoks with minor adaptations.
Collapse
Affiliation(s)
- F Fémy
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
- Service d'Accueil des Urgences, Hôpital Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris, Paris, France
- Université Paris-Saclay, Paris, France
| | - G Meesemaecker
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| | - N Belverge
- Unité de Développements Analytiques et Bioanalyse, Institut de Recherche Biomédicale des Armées, Bretigny-sur-Orge, France
| | - C Courageux
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| | - A Nervo
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| | - R Goulay
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| | - C Reymond
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| | - F Chantegreil
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| | - M Madi
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| | - F Nachon
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France.
- Université Paris-Saclay, Paris, France.
| | - N Taudon
- Unité de Développements Analytiques et Bioanalyse, Institut de Recherche Biomédicale des Armées, Bretigny-sur-Orge, France
| | - N Jaffré
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge Cedex, France
| |
Collapse
|
2
|
|
3
|
Dhote F, Reymond C, Dorandeu F. Évaluation de l’efficacité thérapeutique du diméthane sulfonate d’HI-6 lors d’une intoxication par le VX russe (VR), chez le macaque cynomolgus. Toxicologie Analytique et Clinique 2014. [DOI: 10.1016/j.toxac.2014.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
4
|
Barra J, Chauvineau V, Reymond C, Pélissier J, Micallef JP, Benaim C, Pérennou D. Recalibrer la verticale biologique améliore l’équilibre dynamique après AVC. Neurophysiol Clin 2012. [DOI: 10.1016/j.neucli.2012.09.079] [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: 11/25/2022] Open
|
5
|
Pérennou D, Chauvineau V, Reymond C, Micallef JP, Pélissier J, Benaim C, Barra MJ. Normaliser la perception de la verticale atténue la latéropulsion après AVC. Ann Phys Rehabil Med 2012. [DOI: 10.1016/j.rehab.2012.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
6
|
Marquer A, Reymond C, Barra J, Pérennou D. Vertical perception after stroke: Anatomy and clinical correlates for visual vertical. Ann Phys Rehabil Med 2011. [DOI: 10.1016/j.rehab.2011.07.571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
7
|
Marquer A, Barra J, Reymond C, Joassin R, Chauvineau V. Neural bases of Aubert effect and prospects in rehabilitation. Ann Phys Rehabil Med 2011. [DOI: 10.1016/j.rehab.2011.07.317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
8
|
|
9
|
Moreno J, Nieto J, Masina S, Cañavate C, Cruz I, Chicharro C, Carrillo E, Napp S, Reymond C, Kaye PM, Smith DF, Fasel N, Alvar J. Immunization with H1, HASPB1 and MML Leishmania proteins in a vaccine trial against experimental canine leishmaniasis. Vaccine 2007; 25:5290-300. [PMID: 17576026 PMCID: PMC2695600 DOI: 10.1016/j.vaccine.2007.05.010] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2006] [Revised: 01/13/2007] [Accepted: 05/13/2007] [Indexed: 11/21/2022]
Abstract
The protective capabilities of three Leishmania recombinant proteins – histone 1 (H1) and hydrophilic acylated surface protein B1 (HASPB1) immunized singly, or together as a protein cocktail vaccine with Montanide™, and the polyprotein MML immunized with MPL®-SE adjuvant – were assessed in beagle dogs. Clinical examination of the dogs was carried out periodically under blinded conditions and the condition of the dogs defined as asymptomatic or symptomatic. At the end of the trial, we were able to confirm that following infection with L. infantum promastigotes, five out of eight dogs immunized with H1 Montanide™, and four out of eight dogs immunized with either the combination of HASPB1 with Montanide™ or the combination of H1 + HASPB1 with Montanide™, remained free of clinical signs, compared with two out of seven dogs immunized with the polyprotein MML and adjuvant MPL®-SE, and two out of eight dogs in the control group. The results demonstrate that HASPB1 and H1 antigens in combination with Montanide™ were able to induce partial protection against canine leishmaniasis, even under extreme experimental challenge conditions.
Collapse
Affiliation(s)
- J Moreno
- WHO Collaborating Centre for Leishmaniasis, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Volle JN, Chambon G, Sayah A, Reymond C, Fasel N, Gijs MAM. Enhanced sensitivity detection of protein immobilization by fluorescent interference on oxidized silicon. Biosens Bioelectron 2003; 19:457-64. [PMID: 14623470 DOI: 10.1016/s0956-5663(03)00201-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We present a silicon chip-based approach for the enhanced sensitivity detection of surface-immobilized fluorescent molecules. Green fluorescent protein (GFP) is bound to the silicon substrate by a disuccinimidyl terephtalate-aminosilane immobilization procedure. The immobilized organic layers are characterized by surface analysis techniques, like ellipsometry, atomic force microscopy (AFM) and X-ray induced photoelectron spectroscopy. We obtain a 20-fold enhancement of the fluorescent signal, using constructive interference effects in a fused silica dielectric layer, deposited before immobilization onto the silicon. Our method opens perspectives to increase by an order of magnitude the fluorescent response of surface immobilized DNA- or protein-based layers for a variety of biosensor applications.
Collapse
Affiliation(s)
- J-N Volle
- Institute of Microelectronics and Microsystems, Swiss Federal Institute of Technology, CH-1015 Lausanne EPFL, Switzerland
| | | | | | | | | | | |
Collapse
|
11
|
Abstract
Chronic ectopic pacing in the adult heart induces myocardial hypotrophy close to the pacing site. We have recently described a similar localized decrease of compact myocardium thickness in the chick embryonic heart after 48 h of intermittent apical ventricular pacing. Here we analyze the cellular mechanisms underlying the response of the embryonic heart to pacing. Because the developing heart had been found to adjust its morphology according to functional demands by undergoing cellular hyperplasia or hypoplasia, we hypothesized that the stimulation should result in hypoplasia of the apical ventricular compartment. Morphologic analysis of hearts submitted to 18 h of effective pacing during 48 h showed a mild to moderate ventricular dilatation, a 28% decrease in the apical compact layer thickness with no changes in other ventricular locations, and atrial wall thickening. These modifications were caused by changes in the number of cell layers, whereas cell size was similar between paced and control hearts. Analysis of proliferative activity after 24 h of pacing showed a decrease of 32% in the rate of cell proliferation limited to the apical compact layer exposed to stimulation. No ultrastructural injury or increased cell death was found. These changes were accompanied by down-regulation of the myocardial growth factor fibroblast growth factor-2 but no differences were found in the expression of platelet-derived growth factor. Thus, chronic intermittent ventricular pacing induces myocardial remodeling in the chick embryonic heart, on the basis of locally regulated rates of cell proliferation.
Collapse
Affiliation(s)
- D Sedmera
- Institute of Physiology, University of Lausanne, Switzerland
| | | | | | | | | | | |
Collapse
|
12
|
Abstract
The catalytic subunit of the cAMP-dependent protein kinase (PKA) from Dictyostelium discoideum contains several domains, including an unusually long N-terminal extension preceding a highly conserved catalytic core. We transformed the aggregationless PkaC-null strain with several deletion constructs of both domains. Strains transformed with genes expressing catalytically-inactive polypeptides could not rescue development. Cotransformation with constructs encoding the N-terminal extension and the catalytic core, both unable to rescue development by themselves, yielded transformants able to proceed to late development. A 27-amino acid long hydrophobic region, immediately upstream of the catalytic core, was found indispensable for PKA function. A putative role of this sequence in the acquisition of the active conformation of the protein is discussed.
Collapse
Affiliation(s)
- H Dammann
- Unité de Régulation Enzymatique des Activités Cellulaires, Institut Pasteur, 25 rue du Dr. Roux, 75724, Paris Cedex 15, France
| | | | | | | | | | | |
Collapse
|
13
|
Etchebehere LC, Van Bemmelen MX, Anjard C, Traincard F, Assemat K, Reymond C, Véron M. The catalytic subunit of Dictyostelium cAMP-dependent protein kinase -- role of the N-terminal domain and of the C-terminal residues in catalytic activity and stability. Eur J Biochem 1997; 248:820-6. [PMID: 9342234 DOI: 10.1111/j.1432-1033.1997.t01-2-00820.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The C subunit of Dictyostelium cAMP-dependent protein kinase (PKA) is unusually large (73 kDa) due to the presence of 330 amino acids N-terminal to the conserved catalytic core. The sequence following the core, including a C-terminal -Phe-Xaa-Xaa-Phe-COOH motif, is highly conserved. We have characterized the catalytic activity and stability of C subunits mutated in sequences outside the catalytic core and we have analyzed their ability to interact with the R subunit and with the heat-stable protein-kinase inhibitor PKI. Mutants carrying deletions in the N-terminal domain displayed little difference in their kinetic properties and retained their capacity to be inhibited by R subunit and by PKI. In contrast, the mutation of one or both of the phenylalanine residues in the C-terminal motif resulted in a decrease of catalytic activity and stability of the proteins. Inhibition by the R subunit or by PKI were however unaffected. Sequence-comparison analysis of other protein kinases revealed that a -Phe-Xaa-Xaa-Phe- motif is present in many Ser/Thr protein kinases, although its location at the very end of the polypeptide is a particular feature of the PKA family. We propose that the presence of this motif may serve to identify isoforms of protein kinases.
Collapse
Affiliation(s)
- L C Etchebehere
- Unité de Régulation Enzymatique des Activités Cellulaires, CNRS UMR 321, Institut Pasteur, Paris, France
| | | | | | | | | | | | | |
Collapse
|
14
|
Vuillemin M, Reymond C, Krstic R. Professor Tomas Pexieder (6.6.1941-28.10.1995). Ann Anat 1996; 178:197-9. [PMID: 8712366] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- M Vuillemin
- Histologisch-Embryologisches Institut, Universität Lausanne, Schweiz
| | | | | |
Collapse
|
15
|
Klein G, Martin JB, Satre M, Reymond C. Endocytosis and inositol hexakisphosphate levels in ras transformants of Dictyostelium discoideum amoebae. Experientia 1989; 45:365-7. [PMID: 2468517 DOI: 10.1007/bf01957480] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Fluid-phase pinocytosis kinetics and lysosomal enzyme secretion parameters were measured in Dictyostelium discoideum amoebae constructed from strain AX3 by transformation with a multicopy plasmid carrying either a normal ras gene (ras-Gly12), a mutated ras gene (ras-Thr12) or by the vector carrying the geneticin resistance gene only (pDNEO2). It was found that the pinocytosis rate and extent as well as the lysosomal enzyme secretion were slightly different in the three strains. These changes, however, were related to minor modifications of the cellular volumes. The overall concentration of inositol hexakisphosphate was similar in the three strains.
Collapse
Affiliation(s)
- G Klein
- DRF/LBIO/Biochimie (UA 1130 CNRS), Grenoble, France
| | | | | | | |
Collapse
|
16
|
|
17
|
Gomer RH, Datta S, Mehdy M, Crowley T, Sivertsen A, Nellen W, Reymond C, Mann S, Firtel RA. Regulation of cell-type-specific gene expression in Dictyostelium. Cold Spring Harb Symp Quant Biol 1985; 50:801-12. [PMID: 3868507 DOI: 10.1101/sqb.1985.050.01.098] [Citation(s) in RCA: 31] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
18
|
Bloch B, Milner RJ, Baird A, Gubler U, Reymond C, Bohlen P, le Guellec D, Bloom FE. Detection of the messenger RNA coding for preproenkephalin A in bovine adrenal by in situ hybridization. ACTA ACUST UNITED AC 1984; 8:345-54. [PMID: 6548571 DOI: 10.1016/0167-0115(84)90045-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The messenger RNA (mRNA) coding for the adrenal precursor of enkephalins (preproenkephalin-A) has been detected in bovine adrenal medulla cells using in situ hybridization with 32P-labelled preproenkephalin A (PPA) complementary DNA. In formaldehyde- and Carnoy-fixed tissue sections, an intense elective labelling restricted to the cells located at the periphery of the adrenal medulla can be detected after hybridization procedure, using X-ray film and classical autoradiographic procedure. Adequate controls show that this labelling is obtained only using PPA complementary DNA, inserted or not in its vector. Distribution of PPA mRNA appears identical to that of its immunoreactive end products, namely Met-enkephalin and BAM22 peptide, detected by immunohistochemistry. Norepinephrine, detectable using monoamine histofluorescence, appears restricted to the cells of the center of the gland unlabelled for PPA mRNA and its end-products. Cultured bovine adrenomedullary cells that exhibited enkephalin immunoreactivity also contain PPA mRNA located in their cytoplasm.
Collapse
|
19
|
Spohr G, Reymond C, Reith W, Sures I, Crippa M. Structural analysis of repetitive sequence elements transcribed in early development of Xenopus laevis. Mol Biol Rep 1983; 9:33-8. [PMID: 6888377 DOI: 10.1007/bf00777471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A cDNA library prepared from mRNA of Xenopus laevis embryos was screened with a genomic DNA fragment containing various transcribed repetitive sequence elements. Comparison of the nucleotide sequence of two isolated cDNAs and their genomic relatives allows one to define two transcribed repetitive sequence elements. One of them belongs to a highly reiterated family and consists of a tandem array of homologous subunits of 77-80 bp. The other is reiterated approximately 2200 times, has a size of 260 bp and displays a conserved region of 135 bp. The data are consistent with the presence of repetitive sequence transcripts in the 3' part of mRNA molecules.
Collapse
|
20
|
Reymond C. [Surgical treatment of the coronary patient and return to work]. Rev Med Suisse Romande 1981; 101:51-5. [PMID: 7221322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
21
|
Abstract
Double-stranded RNA segments present in duck globin pre-mRNA were crosslinked in situ with aminomethyltrioxalen and UV light. The secondary structure of the crosslinked pre-mRNA was then studied by electron-microscopic analysis of pre-mRNA . cDNA hybrids. The data suggest that duck globin pre-mRNAs contain intervening sequences that are excised stepwise. Excision and subsequent ligation appears to occur on precursor molecules that are stabilized by base-paired regions.
Collapse
|
22
|
Aglianó AM, Nacci A, Reymond C, Appleby D, Spohr G. Globin mRNA precursor. Cross-linking in situ of double-stranded segments with aminomethyltrioxalen. Eur J Biochem 1979; 95:203-13. [PMID: 456350 DOI: 10.1111/j.1432-1033.1979.tb12955.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The globin mRNA sequences present in duck erythroblast nuclei appear under non-denaturing conditions to be associated with heterogeneous nuclear RNA (hnRNA) molecules of various sizes. Under denaturing conditions, however, the bulk of the globin mRNA sequences associated with hnRNA are released as molecules of size close to that of the active globin mRNA. To find out whether hydrogen-bonded structures occur in situ or arise after RNA extraction, nuclei were treated with aminomethyltrioxalen and exposed to ultraviolet light. This treatment generates covalent links between opposite strands of double-stranded nuclei acids, which were visualised by electron microscopy. It appears that, after cross-linking, a fraction of the globin mRNA sequences present in nuclei is associated with high-molecular-weight hnRNA molecules by a link found associated with a band of 0.9 x 10(6) molecular weight approximately. It is suggested that within the erythroblast nucleus, globin mRNA sequences are associated by hydrogen bonds with RNA of high molecular weight. These structures may represent intermediate steps in globin mRNA processing.
Collapse
|
23
|
Rivier JL, Desbaillets P, Feuardent R, Jaeger M, Jeanneret P, Jornod JC, Reymond C. [The long-term treatment of angina pectoris with pindolol and isosorbide dinitrate in fixed combination. A multicenter trial (author's transl)]. Schweiz Rundsch Med Prax 1978; 67:22-6. [PMID: 341112] [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: 12/14/2022]
|
24
|
Rivier JL, Monti M, Mazzoni S, Reymond C, Jaggi CP, Jaeger M. [The role of reduction of the heart rate in the favorable effect of the beta blockers on myocardial ischemia due to isoprenalin in patients with angina pectoris]. Schweiz Med Wochenschr 1977; 107:1555-6. [PMID: 918610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the patient suffering from angina, the protective effect of oxprenolol in the isoprenaline test is demonstrated by the reduction of disappearance of ischemic-type electrocardiographic alterations and of angina and rhythm disturbances. In our study, these results were obtained in spite of neutralization of the negative chronotropic effect of the beta-blocker through the use of an endo-auricular pacemaker. This points indirectly to the role played by the contractile state of the myocard in catecholamine-induced modifications of the oxygen intake of cardiac muscle.
Collapse
|
25
|
Jaeger M, Mazoni S, Reymond C, Rivier JL. [The right auricular electrocystolic training test for the electrocardiographic diagnosis of coronary insufficiency (author's transl)]. Ann Cardiol Angeiol (Paris) 1977; 26:285-90. [PMID: 889271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
26
|
Jaeger M, Mazzoni S, Reymond C, Steele R, Rivier JL. [Electrocardiographic diagnosis of coronary insufficiency by means of right atrial pacing]. Schweiz Med Wochenschr 1976; 106:1584-5. [PMID: 1013680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
In 285 patients who underwent selective coronary arteriography and atrial pacing for electrocardiographic diagnosis of suspected coronary failure, the sensitivity of this test was found to be rather poor: 43% positive results for atrial pacing compared to 50% for the submaximal exercise test, 75% for the maximal exercise test and 63% for the isoprenaline infusion test. In our experience atrial pacing is of diagnostic value only where uncertainty persists after a negative isoprenaline infusion test and an exercise test likewise negative but for some reason submaximal.
Collapse
|
27
|
Sadeghi H, Papaioannou J, Mazzoni S, Essinger A, Reymond C, Jaeger M, Rivier JL. [Proceedings: Results of the surgical treatment of valvulopathies and ischemic heart disease in patients older than 65 years]. Schweiz Med Wochenschr 1975; 105:1459-62. [PMID: 1215926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
53 patients aged from 65 to 76 years underwent surgery for valvulopathies (23 patients), atherosclerotic heart disease (24 patients) or both diseases combined (6 patients). All these cases were in NYHA fonctional classes III and IV except for one patient in class II. Hospital mortality after surgical treatment of these cardiopathies was 3.8% (2 deaths). The late mortality of 19% (10 deaths), though high, was of non-cardiac origin in 7 of these patients. The clinical and hemodynamic findings in the two patients who died in the postoperative period were compared with those in the others. These two patients were more severely ill and had a greater degree of cardiomegaly than the average patient in the surviving group. The satisfactory clinical improvement in these elderly cardiac patients suggests that surgery can be recommended at least up to 75 years of age if there are no obvious contraindications. Life expectancy of 13-16 years for patients aged 65 and 8-9 years for patients aged 75 is a further reason for advocating surgical intervention.
Collapse
|
28
|
Reymond C, Rivier JL, Essinger A, Jaeger M, Desbaillets P, Sadeghi H. [Effects of aorto-coronary veinous bypass on pain and on the ECG during the exercise test]. Schweiz Med Wochenschr 1973; 103:1824-6. [PMID: 4543779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
29
|
Reymond C, Rivier JL. [Clinical study of the antiarrhythmic properties of amiodarone]. Ther Umsch 1973; 30:223-30. [PMID: 4569630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
30
|
Rivier JL, Jaeger M, Reymond C, Desballets P. [Primary pulmonary arterial hypertension and appetite depressants]. Arch Mal Coeur Vaiss 1972; 65:787-96. [PMID: 4633516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
31
|
Rivier JL, Jaeger M, Desbaillets P, Reymond C. [Primary and anorexigenic pulmonary arterial hypertension]. Arch Mal Coeur Vaiss 1971; 64:607. [PMID: 4997266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
32
|
Reymond C. [Value of aminodarone in the symptomatic treatment of coronary insufficiency in patients (40 cases)]. Therapie 1970; 25:323-9. [PMID: 5526210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
33
|
Sangra R, Tsicotis A, Reymond C, Rivier JL, Delaloye B. [Hemodynamics of pulmonary arterial hypertension of vascular origin]. Schweiz Med Wochenschr 1968; 98:1252-5. [PMID: 4878791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
34
|
Rivier JL, Reymond C, Grandjean T. [Inhibitors of beta-adrenergic receptors and disorders of the heart rhythm. (A propos of 112 cases treated with trasicor Ciba)]. Ther Umsch 1968; 25:58-63. [PMID: 5717241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|
35
|
Reymond C. [Myocardial infarct at the medical clinic of the University of Lausanne]. Praxis 1966; 55:488-491. [PMID: 6014031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
|
36
|
Reymond C. [Poliomyelitis in Denmark in 1952]. Anesth Anal 1955; 12:875-6. [PMID: 15444893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
|