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Hammel M, Touchard F, Burioli EAV, Paradis L, Cerqueira F, Chailler E, Bernard I, Cochet H, Simon A, Thomas F, Destoumieux-Garzón D, Charrière GM, Bierne N. Marine transmissible cancer navigates urbanized waters, threatening spillover. Proc Biol Sci 2024; 291:20232541. [PMID: 38378149 PMCID: PMC10878816 DOI: 10.1098/rspb.2023.2541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/22/2024] [Indexed: 02/22/2024] Open
Abstract
Inter-individual transmission of cancer cells represents a unique form of microparasites increasingly reported in marine bivalves. In this study, we sought to understand the ecology of the propagation of Mytilus trossulus Bivalve Transmissible Neoplasia 2 (MtrBTN2), a transmissible cancer affecting four Mytilus mussel species worldwide. We investigated the prevalence of MtrBTN2 in the mosaic hybrid zone of M. edulis and M. galloprovincialis along the French Atlantic coast, sampling contrasting natural and anthropogenic habitats. We observed a similar prevalence in both species, probably due to the spatial proximity of the two species in this region. Our results showed that ports had higher prevalence of MtrBTN2, with a possible hotspot observed at a shuttle landing dock. No cancer was found in natural beds except for two sites close to the hotspot, suggesting spillover. Ports may provide favourable conditions for the transmission of MtrBTN2, such as high mussel density, stressful conditions, sheltered and confined shores or buffered temperatures. Ships may also spread the disease through biofouling. Our results suggest ports may serve as epidemiological hubs, with maritime routes providing artificial gateways for MtrBTN2 propagation. This highlights the importance of preventing biofouling on docks and ship hulls to limit the spread of marine pathogens hosted by fouling species.
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Affiliation(s)
- M. Hammel
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - F. Touchard
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - E. A. V. Burioli
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - L. Paradis
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - F. Cerqueira
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - E. Chailler
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | | | - H. Cochet
- Cochet Environnement, 56550 Locoal, France
| | - A. Simon
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
| | - F. Thomas
- CREEC/CANECEV (CREES), MIVEGEC, Unité Mixte de Recherches, IRD 224-CNRS 5290-Université de Montpellier, Montpellier, France
| | - D. Destoumieux-Garzón
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - G. M. Charrière
- IHPE, Univ Montpellier, CNRS, Ifremer, Univ Perpignan Via Domitia, Montpellier, France
| | - N. Bierne
- ISEM, Univ Montpellier, CNRS, IRD, Montpellier, Occitanie, France
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Bouby L, Bonhomme V, Cabanis M, Durand F, Figueiral I, Flottes L, Marinval P, Martin L, Paradis L, Pinaud R, Ros J, Rovira N, Tillier M. Talkin' About a Revolution. Changes and Continuities in Fruit Use in Southern France From Neolithic to Roman Times Using Archaeobotanical Data (ca. 5,800 BCE - 500 CE). Front Plant Sci 2022; 13:719406. [PMID: 35197992 PMCID: PMC8859487 DOI: 10.3389/fpls.2022.719406] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 01/05/2022] [Indexed: 06/14/2023]
Abstract
The use and socio-environmental importance of fruits dramatically changed after the emergence of arboriculture and fruit domestication in the eastern Mediterranean, between the 5th and the 3rd millennia BCE. Domesticated fruits together with cultivation techniques apparently reached the western Mediterranean via colonial activities during the 1st millennium BCE - early 1st millennium CE. However, the pace and chronology of this diffusion as well as the recompositions in diversity, to adapt to new socio-environmental conditions, remain poorly known. In this study we investigate archaeobotanical records in Southern France from the Neolithic to the end of the Roman empire (ca. 5,800 BCE - 500 CE) to assess changes in fruit use as well as the emergence, spread and evolution of fruit cultivation. We explore changes in native traditions faced with innovations brought by Mediterranean colonization and how domesticated fruit cultivation spread from the Mediterranean to more temperate areas. Archaeobotanical data from 577 assemblages were systematically analyzed distinguishing two datasets according to preservation of plant remains (charred vs. uncharred), as this impacts on the quantity and diversity of taxa. The 47 fruit taxa identified were organized in broad categories according to their status and origin: exotic, allochtonous cultivated, indigenous cultivated, wild native. We also analyzed diversity, quantity of fruits compared to the total of economic plants and spatio-temporal variations in the composition of fruit assemblages using correspondence factor analyses. Archaeobotanical data reflect variations and continuities in the diversity of species used through time and space. In the Mediterranean area, significant changes related to the arrival of new plants and development of fruit cultivation occurred mainly, first during the Iron Age (6th-5th c. BCE), then in the beginning of the Roman period. Large cities played a major role in this process. In agreement with archeological information, archaeobotanical data reveal the predominance of viticulture in both periods. However, arboriculture also included other fruit species that have been subject to less intensive and specialized cultivation practices. Most significantly, this study pinpoints the continuous contribution of native, supposedly wild fruits throughout the chronology. Despite the homogenizing Roman influence, results reveal clear differences between the Mediterranean and temperate regions.
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Affiliation(s)
- Laurent Bouby
- ISEM, Université Montpellier, CNRS, IRD, EPHE, Montpellier, France
| | - Vincent Bonhomme
- ISEM, Université Montpellier, CNRS, IRD, EPHE, Montpellier, France
| | - Manon Cabanis
- Institut national de recherches en archéologie préventive (INRAP), Paris, France
| | - Frédérique Durand
- Institut national de recherches en archéologie préventive (INRAP), Paris, France
- TRACES, Université Jean Jaurès, CNRS, Ministère de la Culture, Toulouse, France
| | - Isabel Figueiral
- ISEM, Université Montpellier, CNRS, IRD, EPHE, Montpellier, France
- Institut national de recherches en archéologie préventive (INRAP), Paris, France
| | | | - Philippe Marinval
- ASM, Université Paul Valery-Montpellier 3, CNRS, MCC, INRAP, Montpellier, France
| | - Lucie Martin
- Laboratoire d’archéologie préhistorique et anthropologie, Université de Genève, Geneva, Switzerland
- EDYTEM, Le Bourget-du-Lac, France
| | - Laure Paradis
- ISEM, Université Montpellier, CNRS, IRD, EPHE, Montpellier, France
| | - Rachël Pinaud
- ASM, Université Paul Valery-Montpellier 3, CNRS, MCC, INRAP, Montpellier, France
| | - Jérôme Ros
- ISEM, Université Montpellier, CNRS, IRD, EPHE, Montpellier, France
| | - Núria Rovira
- ASM, Université Paul Valery-Montpellier 3, CNRS, MCC, INRAP, Montpellier, France
| | - Margaux Tillier
- ISEM, Université Montpellier, CNRS, IRD, EPHE, Montpellier, France
- ASM, Université Paul Valery-Montpellier 3, CNRS, MCC, INRAP, Montpellier, France
- Ipso Facto Scop, Arles, France
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3
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Kassout J, Ater M, Ivorra S, Barbara H, Limier B, Ros J, Girard V, Paradis L, Terral JF. Resisting Aridification: Adaptation of Sap Conduction Performance in Moroccan Wild Olive Subspecies Distributed Over an Aridity Gradient. Front Plant Sci 2021; 12:663721. [PMID: 34276726 PMCID: PMC8283533 DOI: 10.3389/fpls.2021.663721] [Citation(s) in RCA: 1] [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] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 06/03/2021] [Indexed: 06/13/2023]
Abstract
In the current context of global change, the increasing frequency and the length of drought periods are testing the resistance capacities of plants of dry habitats. However, although the adaptation of plants to drought has been widely studied, the anatomical features of wood influencing the functional responses of plants to drought are still lacking at the intraspecific level, especially for species with a wide geographical distribution. As a result, we have studied the variation of wood anatomical traits related to sap conduction (i.e., vessel surface area, vessel density, and number of vessels joined by radial file) in two wild olive subspecies distributed in Morocco (i.e., Olea europaea subsp. europaea. var. sylvestris and Olea europaea subsp. maroccana), in relation to various drought conditions. This functional study, based on wood trait measurements of 351 samples from 130 trees and 13 populations, explores potential sap conduction in relation to environmental parameters and as a result, strategies to resist water stress. We found that (1) branch diameter (BD) captured 78% of total wood trait variation, (2) vessel size (SVS) expressed 32% of intraspecific variation according to cambium age, and (3) the positive relationship between SVS and BD could be explained by climate type, vegetation cover changes, and therefore available water resources. Taking into consideration the diameter of the branch as the main factor of anatomical variation, established reaction norms (linear models) at the intrapopulation scale of vessel lumen area according to aridity show for the first time how the functioning of the cambium modulates and controls sap conduction, according to aridity and thus available water resources. They pinpoint the risks incurred by the wild olive tree in the perspective of a dramatic increase in aridity, in particular, the inability of the cambium to produce large enough vessels to efficiently transport sap and irrigate the leaves. Finally, this study opens new and interesting avenues for studying at a Mediterranean scale, the resistance and the vulnerability of wild forms and cultivated varieties of olive to heterogeneous and changing environmental conditions.
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Affiliation(s)
- Jalal Kassout
- Laboratoire Botanique Appliquée, Equipe bio-Agrodiversité, Faculté des Sciences, Université Abdelmalek Essaâdi, Tétouan, Morocco
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
| | - Mohammed Ater
- Laboratoire Botanique Appliquée, Equipe bio-Agrodiversité, Faculté des Sciences, Université Abdelmalek Essaâdi, Tétouan, Morocco
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
| | - Sarah Ivorra
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
| | - Hicham Barbara
- Laboratoire Botanique Appliquée, Equipe bio-Agrodiversité, Faculté des Sciences, Université Abdelmalek Essaâdi, Tétouan, Morocco
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
| | - Bertrand Limier
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
- INRAE, Centre Occitanie-Montpellier, Montpellier, France
| | - Jérôme Ros
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
| | - Vincent Girard
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
| | - Laure Paradis
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
| | - Jean-Frédéric Terral
- ISEM, Université de Montpellier, Equipe DBA, CNRS, IRD, EPHE, Montpellier, France
- Associated International Laboratory/International Research Project EVOLEA, INEE-CNRS, France – Morocco, Montpellier, France
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Geppert A, Ribero S, Moss E, Rochlin J, Sherrod M, Moore A, Paradis L, Gilliam M. P42 A new tool for sparking nonjudgmental sexual and reproductive health conversations between adolescents and healthcare providers developed with adolescents using participatory design. Contraception 2020. [DOI: 10.1016/j.contraception.2020.07.061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gros‐Balthazard M, Battesti V, Ivorra S, Paradis L, Aberlenc F, Zango O, Zehdi‐Azouzi S, Moussouni S, Naqvi SA, Newton C, Terral J. On the necessity of combining ethnobotany and genetics to assess agrobiodiversity and its evolution in crops: A case study on date palms ( Phoenix dactylifera L.) in Siwa Oasis, Egypt. Evol Appl 2020; 13:1818-1840. [PMID: 32908588 PMCID: PMC7463332 DOI: 10.1111/eva.12930] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/29/2020] [Accepted: 01/31/2020] [Indexed: 11/06/2022] Open
Abstract
Crop diversity is shaped by biological and social processes interacting at different spatiotemporal scales. Here, we combined population genetics and ethnobotany to investigate date palm (Phoenix dactylifera L.) diversity in Siwa Oasis, Egypt. Based on interviews with farmers and observation of practices in the field, we collected 149 date palms from Siwa Oasis and 27 uncultivated date palms from abandoned oases in the surrounding desert. Using genotyping data from 18 nuclear and plastid microsatellite loci, we confirmed that some named types each constitute a clonal line, that is, a true-to-type cultivar. We also found that others are collections of clonal lines, that is, ethnovarieties, or even unrelated samples, that is, local categories. This alters current assessments of agrobiodiversity, which are visibly underestimated, and uncovers the impact of low-intensity, but highly effective, farming practices on biodiversity. These hardly observable practices, hypothesized by ethnographic survey and confirmed by genetic analysis, are enabled by the way Isiwans conceive and classify living beings in their oasis, which do not quite match the way biologists do: a classic disparity of etic versus. emic categorizations. In addition, we established that Siwa date palms represent a unique and highly diverse genetic cluster, rather than a subset of North African and Middle Eastern palm diversity. As previously shown, North African date palms display evidence of introgression by the wild relative Phoenix theophrasti, and we found that the uncultivated date palms from the abandoned oases share even more alleles with this species than cultivated palms in this region. The study of Siwa date palms could hence be a key to the understanding of date palm diversification in North Africa. Integration of ethnography and population genetics promoted the understanding of the interplay between diversity management in the oasis (short-time scale), and the origins and dynamic of diversity through domestication and diversification (long-time scale).
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Affiliation(s)
- Muriel Gros‐Balthazard
- Center for Genomics and Systems BiologyNew York University Abu DhabiAbu DhabiUnited Arab Emirates
- Institut des Sciences de l’ÉvolutionUMR 5554 CNRS/Université de Montpellier/IRD/EPHECC065Équipe Dynamique de la Biodiversité, Anthropo‐écologieUniversité – MontpellierMontpellier Cedex 5France
| | - Vincent Battesti
- UMR 7206 Éco‐anthropologieCNRSMuséum national d’histoire naturelleUniversite de Paris: Musée de l’HommeParisFrance
| | - Sarah Ivorra
- Institut des Sciences de l’ÉvolutionUMR 5554 CNRS/Université de Montpellier/IRD/EPHECC065Équipe Dynamique de la Biodiversité, Anthropo‐écologieUniversité – MontpellierMontpellier Cedex 5France
| | - Laure Paradis
- Institut des Sciences de l’ÉvolutionUMR 5554 CNRS/Université de Montpellier/IRD/EPHECC065Équipe Dynamique de la Biodiversité, Anthropo‐écologieUniversité – MontpellierMontpellier Cedex 5France
| | - Frédérique Aberlenc
- Institut de Recherche pour le Développement (IRD)Université de Montpellier, UMR DIADEMontpellierFrance
| | | | | | - Souhila Moussouni
- Faculté des Sciences BiologiquesLaboratoire de Recherche sur les Zones Arides (LRZA)Université des Science et de la Technologie Houari Boumediene (USTHB)AlgerAlgeria
| | - Summar Abbas Naqvi
- Institute of Horticultural SciencesUniversity of AgricultureFaisalabadPakistan
| | | | - Jean‐Frédéric Terral
- Institut des Sciences de l’ÉvolutionUMR 5554 CNRS/Université de Montpellier/IRD/EPHECC065Équipe Dynamique de la Biodiversité, Anthropo‐écologieUniversité – MontpellierMontpellier Cedex 5France
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6
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Paradis N, Marois L, Paradis L, Graham F, Bégin P, Des Roches A. Anaphylaxis to clindamycin following cutaneous exposure. Allergy Asthma Clin Immunol 2020; 16:51. [PMID: 32577121 PMCID: PMC7304217 DOI: 10.1186/s13223-020-00452-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/15/2020] [Indexed: 11/10/2022] Open
Abstract
Background The role and importance of skin barrier as an immunologic organ and as a potent way of sensitization is well known. However, antibiotics anaphylaxis following skin sensitization has not been reported. Case presentation We describe the first case of intravenous clindamycin anaphylaxis, with likely sensitization due to previous topical exposure to clindamycin gel for acne in a 14-year-old boy with history of atopy and mild atopic dermatitis. Conclusion This case highlights the potential sensitization to drug allergens, including antibiotics, via the skin.
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Affiliation(s)
- N Paradis
- Pediatric Allergy and Clinical Immunology, CHU Sainte-Justine, 3175 chemin de la Côte-Sainte-Catherine, Montreal, QC H3T 1C5 Canada
| | - L Marois
- Pediatric Allergy and Clinical Immunology, CHU Sainte-Justine, 3175 chemin de la Côte-Sainte-Catherine, Montreal, QC H3T 1C5 Canada
| | - L Paradis
- Pediatric Allergy and Clinical Immunology, CHU Sainte-Justine, 3175 chemin de la Côte-Sainte-Catherine, Montreal, QC H3T 1C5 Canada.,Allergy and Clinical Immunology, Centre Hospitalier de l'Universite de Montreal (CHUM), Montreal, Canada
| | - F Graham
- Pediatric Allergy and Clinical Immunology, CHU Sainte-Justine, 3175 chemin de la Côte-Sainte-Catherine, Montreal, QC H3T 1C5 Canada.,Allergy and Clinical Immunology, Centre Hospitalier de l'Universite de Montreal (CHUM), Montreal, Canada
| | - P Bégin
- Pediatric Allergy and Clinical Immunology, CHU Sainte-Justine, 3175 chemin de la Côte-Sainte-Catherine, Montreal, QC H3T 1C5 Canada.,Allergy and Clinical Immunology, Centre Hospitalier de l'Universite de Montreal (CHUM), Montreal, Canada.,Applied Clinical Research Unit, CHU Sainte-Justine, Montreal, Canada
| | - A Des Roches
- Pediatric Allergy and Clinical Immunology, CHU Sainte-Justine, 3175 chemin de la Côte-Sainte-Catherine, Montreal, QC H3T 1C5 Canada.,Applied Clinical Research Unit, CHU Sainte-Justine, Montreal, Canada
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7
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Bégin P, Filion C, Graham F, Lacombe-Barrios J, Paradis J, Paradis L, Des Roches A. Consultation with registered dietitian to prevent accidental reactions to food: insight from an egg allergy influenza vaccination cohort. Eur J Clin Nutr 2016; 71:287-289. [PMID: 28000691 DOI: 10.1038/ejcn.2016.241] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 09/12/2016] [Accepted: 09/15/2016] [Indexed: 11/09/2022]
Abstract
Egg is an ubiquitous allergen found in many food products. Current food allergy guidelines recognize the importance of consultation with a registered dietitian to ensure nutritional adequacy. However, there is a lack of evidence on its impact on the implementation of allergen avoidance strategies. Taking advantage of a well-characterized cohort of influenza vaccination in egg-allergic children (n=397), we tested the hypothesis that real-life professional dietary advice was associated with a decrease in accidental reactions to egg in allergic children with retrospective questionnaires. Lack of consultation with a dietitian was associated with a 1.89-fold increase in the risk of accidental reactions to egg (confidence interval: 1.47-2.42). The only other independent variable that predicted reactions was having had a history of acute reaction to egg prior diagnosis (relative risk=2.02; confidence interval: 1.64-3.00). These findings support the usefulness of referral to a food allergy-specialized dietitian at time of diagnosis in order to prevent future accidental reactions to egg.
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Affiliation(s)
- P Bégin
- Service of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada.,Department of Medicine, Centre Hospitalier de l'Université de Montréal, Service of Allergy and Clinical Immunology, Montreal, Quebec, Canada
| | - C Filion
- Department of Medicine, Centre Hospitalier de l'Université de Montréal, Service of Allergy and Clinical Immunology, Montreal, Quebec, Canada
| | - F Graham
- Department of Medicine, Centre Hospitalier de l'Université de Montréal, Service of Allergy and Clinical Immunology, Montreal, Quebec, Canada
| | - J Lacombe-Barrios
- Service of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada
| | - J Paradis
- Service of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada
| | - L Paradis
- Service of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada.,Department of Medicine, Centre Hospitalier de l'Université de Montréal, Service of Allergy and Clinical Immunology, Montreal, Quebec, Canada
| | - A Des Roches
- Service of Allergy and Clinical Immunology, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Quebec, Canada
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Bégin P, Graham F, Killer K, Paradis J, Paradis L, Des Roches A. Introduction of peanuts in younger siblings of children with peanut allergy: a prospective, double-blinded assessment of risk, of diagnostic tests, and an analysis of patient preferences. Allergy 2016; 71:1762-1771. [PMID: 27291651 DOI: 10.1111/all.12956] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND The prevalence of peanut allergy in younger siblings of children with peanut allergy has been reported between 7% and 8.5%, but the anaphylactic risk at the time of introduction is currently unknown, which limits our ability to best counsel parents on this issue. OBJECTIVE To determine the risk of anaphylaxis and working parameters of allergy testing in this context. METHODS One hundred and fifty-four peanut-naïve younger siblings of peanut-allergic children underwent double-blinded skin testing, followed by parent-led peanut introduction. Questionnaires were dispensed to parents to investigate preferences with regard to peanut introduction in this subgroup. RESULTS Eight participants (5.2%) presented unequivocal IgE-mediated reactions to peanut upon introduction, including five anaphylaxes. These participants were significantly older compared to the rest of the cohort (median 4.0 vs 1.9 years, P = 0.04). The negative predictive value of skin prick test with peanut extract and peanut butter and of specific IgE was 99%, 100%, and 100%, respectively. Six peanut-tolerant participants had positive peanut allergy tests. The option of introducing at home without prior skin testing was associated with high levels of anxiety (median 8.4 on 10-point Likert scale) when compared to supervised introduction (median 3.8, P < 0.0001) or home introduction after negative skin test (median 4.3, P < 0.0001). CONCLUSIONS There is an increased risk of anaphylaxis upon peanut introduction in siblings of children with peanut allergy, and parents are reluctant to introduce at home without testing. Allergy testing prior to introduction is negative in over 90% of cases and carries a high negative predictive value.
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Affiliation(s)
- P. Bégin
- Department of Pediatrics, Service of Allergy and Clinical Immunology; Centre Hospitalier Universitaire Sainte-Justine; Montreal QC Canada
- Department of Medicine, Service of Allergy and Clinical Immunology; Centre Hospitalier de l'Université de Montréal; Montreal QC Canada
| | - F. Graham
- Department of Pediatrics, Service of Allergy and Clinical Immunology; Centre Hospitalier Universitaire Sainte-Justine; Montreal QC Canada
| | - K. Killer
- Department of Pediatrics, Service of Allergy and Clinical Immunology; Centre Hospitalier Universitaire Sainte-Justine; Montreal QC Canada
| | - J. Paradis
- Department of Pediatrics, Service of Allergy and Clinical Immunology; Centre Hospitalier Universitaire Sainte-Justine; Montreal QC Canada
- Department of Medicine, Service of Allergy and Clinical Immunology; Centre Hospitalier de l'Université de Montréal; Montreal QC Canada
| | - L. Paradis
- Department of Pediatrics, Service of Allergy and Clinical Immunology; Centre Hospitalier Universitaire Sainte-Justine; Montreal QC Canada
- Department of Medicine, Service of Allergy and Clinical Immunology; Centre Hospitalier de l'Université de Montréal; Montreal QC Canada
| | - A. Des Roches
- Department of Pediatrics, Service of Allergy and Clinical Immunology; Centre Hospitalier Universitaire Sainte-Justine; Montreal QC Canada
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Pasturel M, Alexandre A, Novello A, Dièye AM, Wélé A, Paradis L, Cordova C, Hély C. Grass Physiognomic Trait Variation in African Herbaceous Biomes. Biotropica 2016. [DOI: 10.1111/btp.12282] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Marine Pasturel
- CNRS, IRD, CEREGE UM34; Aix Marseille Université; 13545 Aix-en-Provence Cedex 4 France
- ISEM, UMR 5554 CNRS; EPHE, IRD 226, Cirad; Université de Montpellier; 34095 Montpellier cedex 5 France
| | - Anne Alexandre
- CNRS, IRD, CEREGE UM34; Aix Marseille Université; 13545 Aix-en-Provence Cedex 4 France
| | - Alice Novello
- CNRS, IRD, CEREGE UM34; Aix Marseille Université; 13545 Aix-en-Provence Cedex 4 France
- IPHEP, UMR 7262 CNRS-INEE; Université de Poitiers; 86022 Poitiers Cedex France
- Evolutionary Studies Institute; University of the Witwatersrand; Johannesburg South Africa
| | - Amadou M. Dièye
- Centre de Suivi Ecologique; rue Léon Gontran Damas; BP 15532 Dakar Sénégal
| | - Abdoulaye Wélé
- Centre de Suivi Ecologique; rue Léon Gontran Damas; BP 15532 Dakar Sénégal
| | - Laure Paradis
- ISEM, UMR 5554 CNRS; EPHE, IRD 226, Cirad; Université de Montpellier; 34095 Montpellier cedex 5 France
| | - Carlos Cordova
- Department of Geography; Oklahoma State University; Stillwater OK 74078 U.S.A
| | - Christelle Hély
- ISEM, UMR 5554 CNRS; EPHE, IRD 226, Cirad; Université de Montpellier; 34095 Montpellier cedex 5 France
- Ecole Pratique des Hautes Etudes; 75014 Paris France
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10
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Rouissi M, Muller S, Ben Hajj Ilaniilani I, Ghrabi Gammar Z, Rhazi L, Paradis L, Bottollier-Curtet M, Gerbaud E, Daoud-Bouattour A. Conservation issues of an exceptional freshwater mediterranean wetland in northwest Tunisia : Garâa Sejenane. revec 2016. [DOI: 10.3406/revec.2016.1847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Des Roches A, Abbott M, Bégin P, Paradis J, Paradis L. Oral pancreatic enzyme supplements can reduce excretion of ovalbumin in breast milk. J Investig Allergol Clin Immunol 2014; 24:62-63. [PMID: 24765885] [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: 06/03/2023] Open
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12
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Picard M, Des Roches A, Begin P, Paradis J, Paradis L. Value Of Skin Testing Solely With Penicillin G In Children With a History Of Penicillin Allergy. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.507] [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: 10/14/2022]
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13
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Lacombe Barrios J, Paradis L, Hatami A, Paradis J, Des Roches A. A Case Series Of Severe Atopic Dermatitis Treated By Anti-ige Therapy: A Paediatric Perspective. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Bégin P, Picard M, Paradis J, Paradis L, Leclerc G. A large cohort of primary familial cryofibrinogenemia originates from the Magdalen Islands. Allergy Asthma Clin Immunol 2011. [PMCID: PMC3242197 DOI: 10.1186/1710-1492-7-s2-a34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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15
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Affiliation(s)
- P Bégin
- Centre Hospitalier Universitaire Sainte-Justine, Service of Immunology and Allergy, Montreal, Canada.
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16
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Chapdelaine H, Lebel M, Paradis L, Des Roches A. Pediatric Liver Transplantation And Food Allergy: Cyclosporine Compared To Tacrolimus Immunosuppression. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.131] [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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17
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DesRoches A, Infante-Rivard C, Paradis L, Paradis J, Haddad E. Peanut allergy: is maternal transmission of antigens during pregnancy and breastfeeding a risk factor? J Investig Allergol Clin Immunol 2010; 20:289-294. [PMID: 20815306] [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] Open
Abstract
BACKGROUND Peanut allergy is an important public health problem in western countries. However, the risk factors associated with this allergy remain uncertain. OBJECTIVE To determine whether the consumption of peanuts during pregnancy and breastfeeding is a risk factor for peanut allergy in infants. METHODS We enrolled 403 infants in a case-control study. The cases were infants aged 18 months or less with a diagnosis of peanut allergy based on a history of clinical reaction after exposure to peanuts and the presence of peanut-specific immunoglobulin E. Controls were age-matched infants with no known clinical history or signs of atopic disease. The mothers of the children filled out a detailed questionnaire about maternal diet during pregnancy and breastfeeding, the infant's diet, the presence of peanut products in the infant's environment, and family history of atopy. RESULTS The mean (SD) age of cases was 1.23 (0.03) years. The groups were comparable in terms of the rate and duration of breastfeeding. However, the reported consumption of peanuts during pregnancy and breastfeeding was higher in the case group and associated with an increased risk of peanut allergy in offspring (odds ratio [OR], 4.22 [95% confidence interval [CI], 1.57-11.30 and OR, 2.28 [95% CI, 1.31-3.97] for pregnancy and breastfeeding, respectively). Overall, the infants with peanut allergy did not seem to be more exposed to peanut products in their environment than the controls. CONCLUSION Early exposure to peanut allergens, whether in utero or through human breast milk, seems to increase the risk of developing peanut allergy.
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Affiliation(s)
- A DesRoches
- Immunology-Allergy Service, Sainte-Justine's Hospital, Montreal, Québec, Canada.
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18
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Nguyen M, Paradis L, Des Roches A, Primeau MN, Paradis J. Adverse reactions resulting from skin testing in the diagnosis of red grubs (Chiromides) allergy. Allergy 2007; 62:1470-1. [PMID: 17983383 DOI: 10.1111/j.1398-9995.2007.01483.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M Nguyen
- Centre hospitalier de l'Université de Montréal, Hôpital Saint-Luc, 1058, rue Saint-Denis, Montréal, Québec, Canada
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Des Roches A, Paradis L, Paradis J, Infante-Rivard C. Peanut Allergy in Infant: is Breastfeeding a Risk Factor? J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.11.557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Affiliation(s)
- A Des Roches
- Immunology-Allergy Service, Hôpital Ste-Justine 3175 Côte Sainte-Catherine, B Bloc 5 Montréal, Québec Canada H3T 1C5.
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Affiliation(s)
- A Des Roches
- Service d'Allergie, Hôpital Sainte-Justine, Montréal, Québec, Canada.
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22
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Affiliation(s)
- A Des Roches
- Hopital Sainte-Justine, Service d'allergie, 3175 Cote Sainte-Catherine, B Bloc 5, Montreal, Quebec, Canada H3T 1C5.
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Abstract
BACKGROUND Chronic rhinosinusitis is a common comorbidity of asthma. However, sinonasal involvement in severe steroid-dependent asthma is still undefined. OBJECTIVE The aim of the study was to evaluate chronic rhinosinusitis in 35 patients with severe steroid-dependent asthma by using a clinical score and coronal computed tomography (CT) scanning. METHODS Thirty-five subjects (16 female subjects) with severe asthma requiring daily doses of oral corticosteroids were compared with 34 patients (19 female patients) with mild-to-moderate asthma. Sinonasal involvement was studied by using clinical and CT scores. Airflow obstruction, therapy requirement, and asthma triggering factors were carefully assessed. RESULTS The proportion of patients with symptoms of rhinosinusitis was similar in both groups of asthmatic subjects (74% in patients with severe steroid-dependent asthma and 70% in patients with mild-to-moderate asthma). All subjects with steroid-dependent asthma versus 88% of subjects with mild-to-moderate asthma had abnormal CT scan results. The clinical (P <.05) and CT scan (P <.0005) severity scores were higher in the subjects with severe steroid-dependent asthma. In both groups the CT scan scores were correlated to the clinical scores (P <.0001 and P <.006), but only in the mild-to-moderate group were both scores correlated with high significance (P <.002 and P <.0005) to the absolute number of blood eosinophils. CONCLUSION Frequency of rhinosinusitis in patients with mild-to-moderate or severe steroid-dependent asthma is similar; however, sinonasal involvement, as evaluated by clinical symptoms and CT scan imaging, is significantly greater in the patients with severe steroid-dependent asthma than in those with mild-to-moderate asthma.
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Affiliation(s)
- M Bresciani
- Service des Maladies Respiratoires and INSERM U 454, Hôpital Arnaud de Villeneuve, CHU de Montpellier, Montpellier, France
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Abstract
In the aim of simulating the ultrasonic inspection of multilayered structure, we propose a hybrid model, based on transfer matrices and ray tracing formalisms. This approach allows one to predict the response of structures containing defects of finite size such as delaminations or adhesion defect.
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Affiliation(s)
- R Croce
- Commissariat a l'Energie Atomique, CEREM, CEA-Saclay, Gif-sur-Yvette, France.
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26
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Pène J, Desroches A, Paradis L, Lebel B, Farce M, Nicodemus CF, Yssel H, Bousquet J. Immunotherapy with Fel d 1 peptides decreases IL-4 release by peripheral blood T cells of patients allergic to cats. J Allergy Clin Immunol 1998; 102:571-8. [PMID: 9802364 DOI: 10.1016/s0091-6749(98)70294-5] [Citation(s) in RCA: 95] [Impact Index Per Article: 3.7] [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: 10/23/2022]
Abstract
BACKGROUND Cells producing a T(H2)-cytokine profile play an important role in the onset and maintenance of atopic diseases, and therefore specific immunotherapy is aimed to induce a switch to cells producing a T(H1)- or T(H0)-cytokine profile. Recently, a novel form of immunotherapy making use of synthetic peptides from the major cat allergen Fel d 1 has been developed, but its mechanisms of action are unknown. OBJECTIVES We examined the effects of immunotherapy with Fel d 1 peptides on the response to bronchial provocation tests (PD20FEV1) with a standardized Fel d 1 cat extract on Fel d 1-specific serum IgE and IgG levels and in vitro IL-4 and IFN-gamma production. METHODS Patients allergic to cats received 6 weekly injections of 7.5 micro(g) (low dose), 75 micro(g) (medium dose), or 750 micro(g) (high dose) of Fel d 1 peptides (25 patients) or a placebo (6 patients). RESULTS Six weeks after ending immunotherapy, posttreatment PD20FEV1 was not significantly different between the treated and placebo groups. However, in the medium- and high-dose groups there was a significant improvement between baseline and posttreatment days. IL-4 release was significantly reduced in the high dose-treated group (P <.005, Wilcoxon W test), whereas it was unchanged in the low or medium dose- and in the placebo-treated groups. In all groups, IFN-gamma, IgE, and IgG levels remained unchanged. CONCLUSION There was no correlation between the improvement of PD20FEV1 and the decrease in IL-4 production. These data suggest that peptide immunotherapy may act by shifting the Fel d 1-induced response of PBMCs in vitro from the T(H2)-like to the T(H0)-like phenotype.
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Affiliation(s)
- J Pène
- INSERM U. 454, Hôpital Arnaud de Villeneuve, Montpellier, France
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27
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Lasserre F, Hernandez L, Paradis L. UT digitized data processing for in service inspection of pressurized water reactor vessels. Nuclear Engineering and Design 1998. [DOI: 10.1016/s0029-5493(97)00298-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Des Roches A, Paradis L, Paradis J. Immunotherapy for asthma. N Engl J Med 1997; 336:1912. [PMID: 9198750] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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29
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Romagnoli M, Mourad G, Serre I, Senac JP, Paradis L, Godard PH, Chanez P. Diffuse pulmonary calcinosis without calcium metabolism abnormalities in a renal transplant recipient. Eur Respir J 1997; 10:958-60. [PMID: 9150342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Eighteen years after an uneventful renal transplantation, the chest radiograph of an asymptomatic 50 year old man showed diffuse bilateral infiltrations, predominately at the right apex. Computed tomography (CT) scan demonstrated a diffuse alveolar pattern, the alveoli being filled with a very dense material, with some tracheal calcifications. Bronchoalveolar lavage fluid analysis was normal, but bronchial and transbronchial biopsies revealed calcium deposits in the bronchial mucosa and in the alveolar septa. The diagnosis of diffuse pulmonary calcinosis was established, despite normal blood calcium, phosphorus and magnesium levels, based upon computed tomography scan and pathological findings at fibreoptic bronchoscopy, without the need for an open lung biopsy.
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Affiliation(s)
- M Romagnoli
- Clinique des Maladies Respiratoires, Hopital Arnaud de Villeneuve, Montpellier, France
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30
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Des Roches A, Paradis L, Menardo JL, Bouges S, Daurés JP, Bousquet J. Immunotherapy with a standardized Dermatophagoides pteronyssinus extract. VI. Specific immunotherapy prevents the onset of new sensitizations in children. J Allergy Clin Immunol 1997; 99:450-3. [PMID: 9111487 DOI: 10.1016/s0091-6749(97)70069-1] [Citation(s) in RCA: 373] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The natural history of allergic sensitization is complex and poorly understood. A prospective nonrandomized study was carried out in a population of asthmatic children younger than 6 years of age whose only allergic sensitivity was to house dust mites (HDMs). OBJECTIVES The study was designed to determine whether specific immunotherapy (SIT) with standardized allergen extracts could prevent the development of new sensitizations over a 3-year follow-up survey. METHODS We studied 22 children monosensitized to HDM who were receiving SIT with standardized allergen extracts and 22 other age-matched control subjects who were monosensitized to HDM. The initial investigation included a full clinical history, skin tests with a panel of standardized allergens, and the measurement of allergen-specific IgE, depending on the results of skin tests. Children were followed up on an annual basis for 3 years, and the development of new sensitizations in each group was recorded. RESULTS Ten of 22 children monosensitized to HDM who were receiving SIT did not have new sensitivities compared with zero of 22 children in the control group (p = 0.001, chi square test). CONCLUSIONS This study suggests that SIT in children monosensitized to HDM alters the natural course of allergy in preventing the development of new sensitizations.
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Affiliation(s)
- A Des Roches
- Service des Maladies Respiratoires, Hôpital Arnaud de Villeneuve, Montpellier, France
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31
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Romagnoli M, Mourad G, Serre I, Senac JP, Paradis L, Godard P, Chanez P. Diffuse pulmonary calcinosis without calcium metabolism abnormalities in a renal transplant recipient. Eur Respir J 1997. [DOI: 10.1183/09031936.97.10040958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Eighteen years after an uneventful renal transplantation, the chest radiograph of an asymptomatic 50 year old man showed diffuse bilateral infiltrations, predominately at the right apex. Computed tomography (CT) scan demonstrated a diffuse alveolar pattern, the alveoli being filled with a very dense material, with some tracheal calcifications. Bronchoalveolar lavage fluid analysis was normal, but bronchial and transbronchial biopsies revealed calcium deposits in the bronchial mucosa and in the alveolar septa. The diagnosis of diffuse pulmonary calcinosis was established, despite normal blood calcium, phosphorus and magnesium levels, based upon computed tomography scan and pathological findings at fibreoptic bronchoscopy, without the need for an open lung biopsy.
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32
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Chanez P, Paradis L, Roches AD, Paganin F, Bashir M, Godard P, Bousquet J. Comparison of three different oral corticosteroids in steroid-dependent asthma patients. Allergy 1996. [DOI: 10.1111/j.1398-9995.1996.tb04479.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Chanez P, Paradis L, Des Roches A, Paganin F, Bashir M, Godard P, Bousquet J. Comparison of three different oral corticosteroids in steroid-dependent asthma patients. Allergy 1996; 51:850-1. [PMID: 8947347] [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: 02/03/2023]
Affiliation(s)
- P Chanez
- Service des Maladies Respiratoires Hôpital Arnaud de Villeneuve, France
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34
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Chanez P, Paradis L, Roches AD, Paganin F, Bashir M, Godard P, Bousquet J. Comparison of three different oral corticosteroids in steroid-dependent asthma patients. Allergy 1996. [DOI: 10.1111/j.1398-9995.1996.tb00035.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Des Roches A, Paradis L, Bougeard YH, Godard P, Bousquet J, Chanez P. Long-term oral corticosteroid therapy does not alter the results of immediate-type allergy skin prick tests. J Allergy Clin Immunol 1996; 98:522-7. [PMID: 8828529 DOI: 10.1016/s0091-6749(96)70085-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Medications can modulate the results of skin prick tests (SPTs). Short-term corticosteroid therapy does not alter IgE-mediated skin tests, but the impact of long-term oral corticosteroid therapy on SPT results is unclear. A prospective study was carried out in patients with steroid-dependent asthma who received oral corticosteroids for a long period to determine whether this treatment reduced skin test reactivity. METHODS Thirty-three patients with steroid-dependent asthma (median age, 59 years) were compared with 66 patients with asthma who served as a control group, matched for age, sex, and atopic status. SPTs with codeine phosphate and a screening battery of standardized allergen extracts were performed before commencement and after at least 1 year of daily oral prednisone treatment (median duration, 2 years; median daily dose, 20 mg). RESULTS Fifteen patients with corticosteroid-dependent asthma were allergic before treatment, and their sensitization was not changed by long-term treatment with oral corticosteroids. The median wheal diameters induced by codeine phosphate were similar in both groups. The median wheal diameters induced by allergens, and more specifically, by Dermatophagoides pteronyssinus and D. farinae were similar in both groups and did not change in the steroid group after treatment. CONCLUSIONS Systemic corticosteroid therapy (prednisone, 10 to 60 mg/day) for 2 or more years does not seem to alter SPT reactivity.
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Affiliation(s)
- A Des Roches
- Service des Maladies Respiratoires, Hôpital Arnaud de Villeneuve, Montpellier, France
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36
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Paradis L, Lavoie A, Brunet C, Bédard PM, Hébert J. Effects of systemic corticosteroids on cutaneous histamine secretion and histamine-releasing factor in patients with chronic idiopathic urticaria. Clin Exp Allergy 1996; 26:815-20. [PMID: 8842556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
BACKGROUND Enhanced skin mast cell releasability of histamine, increased production of histamine releasing factor (HRF), and cutaneous inflammatory process are the hallmarks of chronic idiopathic urticaria (CU). Although H1-antihistamines are known to alleviate the symptoms effectively in most cases, systemic corticosteroids (CS) are given in more resistant patients. Their mode of action remains a matter of controversy. OBJECTIVES In the present study, the effects of a 7-day course of CS or placebo on histamine content and HRF production in non-lesional skin of 19 CU patients were examined. METHODS Using the skin chamber technique, HRF production and histamine content were assessed in normal-appearing skin of patients with CU over a 2-h observation period. Those two parameters were measured before and after treatment, in a double-blind fashion. RESULTS No significant changes occurred in any parameters after placebo treatment. In contrast with this, significant decrease of HRF activity was observed after 1 week of oral methylprednisolone while no change was documented for histamine secretion. CONCLUSION These data suggest that CS therapy improves symptoms of CU in association with a decreased production of HRF in uninvolved skin.
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Affiliation(s)
- L Paradis
- Centre de Recherche en Immunologie-Rhumatologie, Le Centre Hospitalier de l'Université Laval, Sainte-Foy, Québec, Canada
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37
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Des Roches A, Paradis L, Knani J, Hejjaoui A, Dhivert H, Chanez P, Bousquet J. Immunotherapy with a standardized Dermatophagoides pteronyssinus extract. V. Duration of the efficacy of immunotherapy after its cessation. Allergy 1996; 51:430-3. [PMID: 8837669 DOI: 10.1111/j.1398-9995.1996.tb04643.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Specific immunotherapy (SIT) using a standardized mite extract is effective and safe when administered under optimal conditions. However, the duration of its effectiveness after cessation of treatment remains unknown. Forty asthmatic subjects who had received SIT with a standardized Dermatophagoides pteronyssinus (Der p) extract under the same protocol were studied. All had received SIT for a period of 12-96 months and were not receiving pharmacologic treatment. The FEV1 was within normal range in all patients. After cessation of treatment, patients were followed for up to 3 years at 6-month intervals. The patient was considered to have relapsed when symptoms of asthma and/or rhinitis occurred and/or when pulmonary function tests were impaired. Skin tests with increasing concentrations of Der p were carried out before and at the end of SIT. Forty-five percent of the patients did not relapse. The duration of efficacy of SIT was related to the duration of SIT itself (P < 0.04). Most patients who did not relapse had a decrease in skin test reactivity at the end of SIT, whereas most patients who relapsed did not show any change (P < 0.003). The duration of efficacy of SIT after its cessation depends upon the duration of SIT and may be predicted by the effect of SIT on skin tests.
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Affiliation(s)
- A Des Roches
- Service des Maladies Respiratoires, Hôpital Arnaud de Villeneuve, Montpellier, France
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38
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Roches AD, Paradis L, Knani J, Hejjaoui A, Dhivert H, Chanez P, Bousquet J. Immunotherapy with a standardized Dermatophagoides pteronyssinus extract. V. Duration of the efficacy of immunotherapy after its cessation. Allergy 1996. [DOI: 10.1111/j.1398-9995.1996.tb00155.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bousquet J, Des Roches A, Paradis L. Clinical use of recombinant allergens and epitopes. Adv Exp Med Biol 1996; 409:463-9. [PMID: 9095282 DOI: 10.1007/978-1-4615-5855-2_67] [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: 02/04/2023]
Affiliation(s)
- J Bousquet
- Clinique des Maladies Respiratoires, Hopital Arnaud de Villeneuve, Centre Hospitalier Universitaire, Montpellier, France
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40
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Affiliation(s)
- J Bousquet
- Arnaud de Villeneuve Hospital, Montpellier, France
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Pisciotto P, Kiraly T, Paradis L, Kakaiya RM, Rink L, Pearson HA. Clinical trial of young red blood cells prepared by apheresis. Ann Clin Lab Sci 1986; 16:473-8. [PMID: 3541773] [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: 01/06/2023]
Abstract
Transfusion of young red blood cells (YRBC) with prolonged survival should result in increased intervals between transfusions and, therefore, decreased transfusion-associated iron loading. A prospective clinical trial comparing YRBC transfusions prepared by apheresis versus washed or frozen red cell transfusions was performed in five children with transfusion-dependent thalassemia. A total of 152 YRBC units, evaluated by reticulocyte enrichment and pyruvate kinase activity, were transfused. While a slightly longer interval between transfusions was observed during the time period of YRBC versus the time period after (30.0 +/- 1.5 days versus 27.9 +/- 1.1 days, respectively, p less than 0.02), there was no associated decrease in mg of iron transfused per kg. The effectiveness of transfused YRBC units was less than predicted by in vitro and in vivo studies.
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Pisciotto P, Kiraly T, Rosen D, Paradis L, Kakaiya RM, Morse EE. Preparation of young red cells for transfusion using the Fenwal CS 3000 cell separator. Am J Hematol 1984; 17:185-91. [PMID: 6465135 DOI: 10.1002/ajh.2830170210] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A pheresis procedure was devised to isolate young red cells by centrifugation using the Fenwal CS 3000 continuous flow cell separator. Young red cell enriched products were collected in a 2.5-3-hour procedure. Large numbers of white cells and platelets were collected with the red cells, but cryopreservation and subsequent washing removed 99% of the contaminating cells. At the completion of all processing a product yielding 70% of the total hemoglobin content of a standard frozen/deglycerolized red cell unit was produced. Autologous radiochromium survival of young red cells, measured in 12 normal donors, showed an average 24-hour recovery of 89.9% with a T50Cr of 40.8 days. In paired autologous studies (N = 4) there was a mean increase of 35% in the observed T50Cr of young red cells as compared to standard frozen red cells.
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