48 results on '"S. Amet"'
Search Results
2. Prise en charge par immunothérapie allergénique (ITA) des allergies respiratoires en France et intérêt des APSI : résultats de l’étude épidémiologique nationale en vie réelle, multicentrique, observationnelle, transversale STRATEGO
- Author
-
M. Migueres, I. Bosse, S. Saf, S. Amet, M. Giraud-Morel, and A. Chartier
- Subjects
Immunology and Allergy - Published
- 2023
3. L’immunothérapie allergénique sublinguale aux acariens (aca) par le lyophilisat 12 SQ HDM améliore significativement la qualité de vie (QdV) et le sommeil (S)
- Author
-
P. Demoly, S. Sedghi, S. Amet, K.F. Andersen, M. Lindholm, and A. Chartier
- Subjects
Immunology and Allergy - Published
- 2023
4. Efficacité de l’immunothérapie allergénique (ITA) en conditions de vie réelle : résultats de l’étude REACT
- Author
-
S. Sedghi, S. Amet, J. Rask Larsen, S. Buchs, and A. Chartier
- Subjects
Immunology and Allergy - Published
- 2022
5. Néphrotoxicité des antirétroviraux autres que le ténofovir
- Author
-
C Isnard-Bagnis, Christopher Loens, S. Amet, Jérôme Tourret, and Gilbert Deray
- Subjects
0301 basic medicine ,Kidney ,business.industry ,Stavudine ,Renal function ,Pharmacology ,030112 virology ,Nephrotoxicity ,03 medical and health sciences ,Zalcitabine ,0302 clinical medicine ,medicine.anatomical_structure ,Nephrology ,Indinavir ,medicine ,Protease inhibitor (pharmacology) ,030212 general & internal medicine ,business ,Didanosine ,medicine.drug - Abstract
The remarkable improvement of the outcome of HIV infection came with the price of substantial toxicity of some antiretrovirals. The first molecules used to treat HIV included an important nephrotoxicity. Zalcitabine, stavudine and didanosine can induce severe lactic acidosis. Lactate production is enhanced and the renal capacity to regulate pH is overwhelmed. However, this side effect is not due to a direct dysfunction of the kidneys. Zalcitabine was withdrawn from the market because of this risk. Indinavir, a protease inhibitor, is soluble only in very acidic solutions. Consequently, the small fraction that is excreted in the urine precipitates and can be responsible for uro-nephrolithiasis, leukocyturia, cristalluria, obstructive acute kidney failure, and acute or chronic interstitial nephritis. This is the reason why indinavir is almost not prescribed nowadays, even if it is still marketed. In addition to the direct nephrotoxicity of some antiretrovirals, anti-HIV treatment also includes a toxicity which pathophysiology is not completely elucidated. This nephrotoxicity is the consequence of organ accelerated ageing and of an increased vascular risk. Kidney vascularization (from renal arteries to capillaries) is essential to kidney function and all cardiovascular risks are also renal risks. It is now clearly established that combined antiretroviral treatment increases the vascular risk. A better comprehension of the links between HIV infection, its treatment and very long-term kidney risk is needed to improve the complex management of patients who have now cumulated several decades of HIV infection and treatment with various toxicities.
- Published
- 2018
6. Évaluation des symptômes d’asthme chez les patients traités avec le comprimé bouleau 12 SQ-Bet
- Author
-
F. De Blay, S. Amet, T. Riis, and A. Chartier
- Subjects
Immunology and Allergy - Published
- 2021
7. Évaluation des effets de classe des comprimés (cps) d’immunothérapie sublinguaux (ITASL) via le programme de développement clinique (PDC) du cp bouleau 12 SQ-bet
- Author
-
B. Alexandre, S. Amet, T.M. Greve, and A. Chartier
- Subjects
Immunology and Allergy - Published
- 2021
8. DIAGRAM : étude observationnelle transversale descriptive des critères de choix des modalités de traitement par immunothérapie allergénique sublinguale (ITA-SL) des rhinoconjonctivites allergiques liées aux graminées (RAPG) en France
- Author
-
A. Chartier, S. Bénédicte, S. Amet, P. Cros, A. Le Maux, and S. Guez
- Subjects
Immunology and Allergy - Abstract
Introduction L’ITA peut etre utilisee dans la RAPG selon 2 protocoles : pre-cosaisonnier (PPC) ou perannuel (PPA) meme si le niveau de preuve pour un benefice a long terme est meilleur pour le PPA (Recommandations EAACI 2018). L’objectif de DIAGRAM etait de decrire le choix du medecin entre ces 2 modalites et d’en comprendre le rationnel. Methodes Etude observationnelle, transversale, multicentrique et nationale, realisee par des allergologues, incluant des patients ≥ 5 ans atteints de RAPG et debutant une ITA-SL. Les donnees ont ete collectees avant l’initiation de l’ITA-SL par des questionnaires medecins et patients (pts) d’oct. 2018 a fev. 2020. La frequence des symptomes de la RAPG a ete evaluee par un score retrospectif (SFRS) cote de 0 a 3 pour chaque symptome (min : 0, max : 18). La severite etait classee : legere ou severe. L’impact sur la qualite de vie (QdV) a ete evalue globalement par les medecins et par le mini-RQLQ par les pts. Le test du Chi2 a ete utilise pour comparer les donnees qualitatives et le test de Student les quantitatives. Resultats Au total, 1119 pts ont ete inclus : âge moyen, 27 ans ; anciennete du diagnostic, 2 ans. Le PPC a ete prescrit chez 1010 pts (92 %). Les 3 criteres les plus importants dans le choix du PPC ou du PPA etaient les symptomes de rhinite (respectivement 27 % ; 50 %), l’impact sur la QdV (24 % ; 19 %) et l’observance (16 % ; 14 %). Si 75 % des medecins n’ont prescrit que le PPC et 6 % que le PPA, 19 % ont prescrit les deux. Au total 92 pts (8 %) ont suivi un PPA. Dans ce groupe PPA, le SRFS etait plus eleve (SFRS ≥ 13 : 67 % vs 58 %, p Conclusion Bien que le PAP ait un niveau de preuve plus fort pour un benefice a long terme dans la RAPG, les medecins francais privilegient le PCP et choisissent le PAP pour les cas plus severes.
- Published
- 2021
9. La valeur diagnostique (VD) de Der p 23 (Dp23) est limitée pour la sensibilisation (sb) aux acariens (Acr) et ne montre aucun lien mesurable avec l’efficacité clinique du cp acariens 12 SQ-HDM : une analyse post hoc de MT-04
- Author
-
A. Chartier, S. Amet, and T. Stranzl
- Subjects
Immunology and Allergy - Abstract
Introduction Der p 23 est un allergene (Ag) majeur des acariens (Acr) comme l’indiquent les frequences de sb elevees aux IgE dans differentes populations. Cette analyse de l’essai clinique MITRA (MT-04) evalue la VD du Dp23 pour tester la sb aux Acr et mesure les effets immunologiques et cliniques du 12 SQ-HDM en fonction du statut de sb au Dp23. Methodes Les IgE de Der p 1 (Dp1), Der p 2 (Dp2), Der p 10 (Dp10) et Dp23 ont ete determinees dans des echantillons de serum de 532 patients (pts) souffrant d’asthme et de RA aux Acr a l’inclusion (inc) dans l’etude MITRA. Les IgG4 de Dp1, Dp2 et Dp23 ont ete mesurees dans des echantillons de serum des memes pts a l’inc et a la fin de l’etude. Toutes les mesures d’anticorps ont ete effectuees par ImmunoCap (Thermo-Fisher). La teneur en Ags du 12 SQ-HDM a ete analysee par spectroscopie de masse (SM). Resultats Dans MITRA, les frequences de sb aux Dp1, Dp2 et Dp23 ont ete determinees a 78 %, 86 % et 66 % respectivement, tandis que seulement 5 % des pts etaient sensibilises a l’Ag mineur Dp10. Un total de 91,6 % des pts etaient sensibilises a Dp1 et/ou Dp2 a l’inc. L’integration de la sb au Dp23 soit Dp1 et/ou Dp2 et/ou Dp23, augmente la VD de seulement 2,4 %, soit un total de 94 % de la population. En revanche, la concentration moyenne d’IgE specifiques a Dp23 etait faible par rapport a Dp1 et Dp2, et a un niveau similaire de celui des IgE de l’Ag mineur Dp10. Les analyses SM demontrent la presence de Dp23 dans le cp Acr, comme observe dans la reponse immunitaire qu’il induit. Comme Dp1 et Dp2, les pts avec des IgE Dp23 a l’inc ont montre une augmentation statistiquement significative des IgG4 specifiques a Dp23 a la fin de l’etude. Dans une analyse post-hoc, les pts MITRA ont ete stratifies en fonction du statut de sb au Dp23 a l’inc. Il n’y avait aucune influence mesurable du statut de sb au Dp23 sur les resultats cliniques, que ce soit au regard de l’OR pour les exacerbations d’asthme ou la probabilite d’avoir une 1ere exacerbation d’asthme pendant le traitement. Conclusion Alors que le 12 SQ-HDM contient des quantites immunologiquement pertinentes des trois principaux Ags, la VD des IgE Dp23 est minime et la stratification basee sur Dp23 ne semble pas cliniquement pertinente.
- Published
- 2021
10. Amélioration de la qualité du sommeil chez les patients souffrant de rhinite allergique (RA) traités par le comprimé (cp) acariens 12 SQ-HDM : une analyse post-hoc
- Author
-
S. Amet, Pascal Demoly, and A. Chartier
- Subjects
Immunology and Allergy - Abstract
Introduction Un sommeil (S) altere, est l’une des nombreuses consequences genantes de la RA, avec un impact potentiel important sur la qualite de vie. Le cp d’ITA sublinguale acariens 12 SQ-HDM a montre son efficacite dans le traitement de la RA aux acariens (RAA) et de l’asthme dans plusieurs etudes cliniques menees en double insu controlees vs placebo (pbo). Cette analyse post-hoc etudie l’effet du 12 SQ-HDM sur le S chez les patients (pts) souffrant de RAA. Methodes Les pts de la MT-06, etude de phase III (pbo : N = 338, 12 SQ-HDM : N = 318) souffrant de RAA moderee a severe (definie comme un score (Sc) total quotidien de symptomes de rhinite d’au moins 6 ou un Sc d’au moins 5 avec 1 symptome severe durant au moins 8 jours de la periode de selection de 15 jours) ont ete traites pendant 1 an maximum. A l’inclusion (inc) et au cours de l’etude, chaque patient a rempli le questionnaire RQLQ de Juniper, evaluant 3 parametres du S (difficulte a s’endormir, reveil nocturne, absence d’une bonne nuit de S) avec des Scs de 0 (non altere) a 6 (extremement altere). Ces Scs du S ont ete releves a l’inc et a la fin de l’etude. Pour effectuer cette analyse, les Scs Resultats Parmi les pts presentant des Scs du S moderement/severement alteres a l’inc (62–72 % de la population), seulement 7–10 % sont restes dans cette categorie chez les pts traites. Cette amelioration etait significativement plus elevee que celle observee sous pbo. Pour ceux debutant dans la categorie “legers”, 1–7 % sont passes a la categorie “moderes/severes” a la fin de l’etude sans difference entre les groupes pbo et 12 SQ-HDM (voir Tableau 1 ). Conclusion Le 12 SQ-HDM ameliore significativement la qualite et la duree du sommeil chez les pts presentant un sommeil altere a l’inclusion.
- Published
- 2021
11. Évaluation des effets de classe des comprimés (cps) d’immunothérapie sublinguaux (ITA-SL) via le programme de développement clinique (PDC) du cp bouleau 12 SQ-bet
- Author
-
S. Amet and T.M. Greve
- Subjects
Immunology and Allergy - Abstract
Introduction Le 12 SQ-bet a ete developpe pour le traitement (tt) de la rhinoconjonctivite allergique induite par les pollens appartenant au groupe homologue du bouleau. Un certain nombre de risques identifies comme des effets de classe de l’ITA SL ont ete analyses durant le PDC. Methodes Les donnees de tolerance de 2 etudes de phase II et 1 etude pivot de phase III ont ete regroupees (N 12 SQ-Bet = 471, N placebo (pbo) = 458) et analysees pour les evenements (Ev) d’intensite severe suivants : reactions laryngo-pharyngees (RLP) (38 termes preferentiels, TP), reactions allergiques systemiques (RASy) (selon la classification MedDRA de reaction anaphylactique (Ran)), aggravation de l’asthme aigu (AAA) et œsophagite a eosinophiles (OEo). Resultats Comme attendu, les RLP liees au tt etaient plus frequentes sous 12 SQ-Bet (54 % des patients (pt)) que sous pbo (11 %). Le TP le plus frequemment rapporte etait l’irritation de gorge (29 % des pt sous 12 SQ-Bet ; 4 % sous pbo). La plupart des reactions etait d’intensite legere ou moderee, d’apparition precoce pendant le tt et etaient transitoires. Des RLP severes ont ete rapportees par 18 pt (4 %) sous 12 SQ-Bet et 1 patient (1 %) sous pbo ; elles incluent 9 gonflements severes de la bouche ou de la gorge rapportes par 8 pt sous 12 SQ-Bet et 1 pt sous pbo. Aucune RLP grave ou compromettant les voies respiratoires n’a ete rapportee. La revue des RASy potentielles (pot) n’a montre aucun cas de Ran chez les pt sous 12 SQ-Bet. La plupart des RASy pot identifiees via la classification MedDRA ne comprenait que des symptomes legers ou moderes n’entrainant pas de modification de tt. Toutes les RASy pot etaient gerables et se sont resolues spontanement ou avec les medicaments usuels. Aucune utilisation d’adrenaline n’a ete rapportee. Des Ev asthmatiques ont ete rapportes par 7 pt sous 12 SQ-Bet et 10 pt sous pbo ; la plupart des Ev etaient legers ou moderes et non lies au tt. Au global, les donnees groupees ne suggerent pas de risque accru d’AAA chez les pt sous 12 SQ-Bet. Aucun Ev d’EEo n’a ete rapporte. Conclusion Le profil de tolerance du cp bouleau est conforme au profil connu des autres cps sublinguaux ALK (graminee, ambroisie et acariens).
- Published
- 2020
12. Amélioration de la qualité du sommeil chez les patients souffrant de rhinite allergique (RA) traités par le comprimé (cp) acariens
- Author
-
S. Amet, H.H. Jacobi, and Pascal Demoly
- Subjects
Immunology and Allergy - Abstract
Introduction Un sommeil (S) altere, est l’une des nombreuses consequences de la RA, avec un impact potentiel important sur la qualite de vie. Le cp d’ITA sublinguale acariens 12 SQ-HDM (ALK, Danemark) a montre son efficacite dans le traitement de la RA aux acariens (RAA) et de l’asthme dans plusieurs etudes cliniques menees en double insu controlees vs placebo (pbo). Cette analyse post-hoc etudie l’effet du 12 SQ-HDM sur le S chez les patients (pts) souffrant de RAA. Methodes Les pts de la MT-06, etude de phase III (pbo : n = 338, 12 SQ-HDM : n = 318) souffrant de RAA moderee a severe (definie comme un score (Sc) total quotidien de symptomes de rhinite d’au moins 6 ou un Sc d’au moins 5 avec 1 symptome severe durant au moins 8 jours de la periode de selection de 15 jours) ont ete traites pendant 1 an maximum. A l’inclusion (inc) et au cours de l’etude, chaque patient a rempli le questionnaire RQLQ de Juniper, evaluant 3 parametres du S (difficulte a s’endormir, reveil nocturne, absence d’une bonne nuit de S) avec des Scs de 0 (non altere) a 6 (extremement altere). Ces Scs du S ont ete releves a l’inc et a la fin de l’etude. Pour effectuer cette analyse, les Scs Resultats Parmi les pts presentant des Scs du S moderement/severement alteres a l’inc (62–72 % de la population), seulement 7-10 % sont restees dans cette categorie chez les pts traites. Cette amelioration etait significativement plus elevee que celle observee sous pbo. Pour ceux debutant dans la categorie “legere”, 1–7 % sont passes a la categorie “moderee/severe” a la fin de l’etude sans difference entre les groupes pbo et 12 SQ-HDM. Conclusion Le 12 SQ-HDM ameliore significativement la qualite et la duree du S chez les pts presentant un S altere a l’inc.
- Published
- 2020
13. Der p 23 (Dp23) fournit une valeur diagnostique (VD) limitée pour la sensibilisation (sb) aux acariens et ne montre aucun lien mesurable avec l’efficacité clinique du cp acariens 12 SQ-HDM
- Author
-
S. Amet and H.H. Ipsen
- Subjects
Immunology and Allergy - Abstract
Introduction Der p 23 est un allergene (Ag) majeur des acariens (Ac) vis-a-vis des frequences de sb elevees aux IgE dans differentes populations. Les objectifs de cette analyse etaient d’evaluer la VD du Dp23 pour tester la sb aux Ac et mesurer les effets immunologiques et cliniques du 12 SQ-HDM en fonction du statut de sb au Dp23. Methodes Les IgE de Der p 1 (Dp1), Der p 2 (Dp2), Der p 10 (Dp10) et Dp23 ont ete determinees dans des echantillons de serum de 532 patients (pts) souffrant d’asthme et de RA aux Ac a l’inclusion (inc) dans l’etude MITRA. Les IgG4 de Dp1, Dp2 et Dp23 ont ete mesurees dans des echantillons de serum des memes pts a l’inc et a la fin de l’etude. Toutes les mesures d’anticorps ont ete effectuees par ImmunoCap (Thermo-Fisher). La teneur en Ags 12 SQ-HDM a ete analysee par spectroscopie de masse (SM). Resultats Dans MITRA, les frequences de sb aux Dp1, Dp2 et Dp23 ont ete determinees a 78 %, 86 % et 66 % respectivement, tandis que seulement 5 % des pts etaient sensibilises a l’Ag mineur Dp10. 91,6 % des pts ont ete sensibilises a Dp1 et/ou Dp2 a l’inc. L’integration de la sb au Dp23 soit Dp1 et/ou Dp2 et/ou Dp23, augmente la VD de seulement 2,4 %, pour un total de 94 % de la population. En revanche, la concentration moyenne d’IgE specifiques a Dp23 etait faible par rapport a Dp1 et Dp2, et a un niveau similaire de celui des IgE de l’Ag mineur Dp10. Les analyses SM demontrent la presence de Dp23 dans le cp Ac, comme observe dans la reponse immunitaire qu’il induit. Comme Dp1 et Dp2, les pts avec des IgE Dp23 a l’inc ont montre une augmentation statistiquement significative des IgG4 specifiques a Dp23 a la fin de l’etude. Dans une analyse post-hoc, les pts MITRA ont ete stratifies en fonction du statut de sb au Dp23 a l’inc. Il n’y avait aucune influence mesurable du statut de sb au Dp23 sur les resultats cliniques, que ce soit au regard de l’OR pour les exacerbations d’asthme ou la probabilite d’avoir une 1ere exacerbation d’asthme pendant le traitement. Conclusion Alors que le 12 SQ-HDM contient des quantites immunologiquement pertinentes des trois principaux Ags, la VD des IgE Dp23 est minime et la stratification basee sur Dp23 ne semble pas cliniquement pertinente.
- Published
- 2020
14. Étude d’efficacité et tolérance du comprimé (cp) ambroisie 12 SQ-Amb chez les enfants souffrant de rhinite allergique avec ou sans conjonctivite (RA/C)
- Author
-
S. Amet and H. Nolte
- Subjects
Immunology and Allergy - Abstract
Introduction Le cp d’immunotherapie sublinguale a l’ambroisie ameliore les symptomes et diminue le recours aux medicaments de secours chez les adultes atteints de RA/C, mais n’a pas ete evalue chez les enfants. Cette etude internationale, menee en double aveugle, controlee vs placebo, a evalue l’efficacite et la tolerance du cp ambroisie chez les enfants atteints de RA/C. Methodes Les enfants polysensibilises (n = 1025) âges de 5 a 17 ans souffrant de RA/C induite par le pollen d’ambroisie avec ou sans asthme (VEMS ≥ 80 % de la valeur theorique) ont ete randomises 1 :1 pour recevoir quotidiennement soit le cp ambroisie (12 SQ-Amb a 1) soit un placebo jusqu’a 28 semaines maximum. L’approbation du comite d’ethique a ete obtenue. Le critere primaire etait le score combine total moyen (TCS : score quotidien des symptomes de RC [DSS] + score quotidien de medicaments [DMS]) au pic de la saison pollinique de l’ambroisie. Les principaux criteres secondaires etaient le TCS moyen pendant la saison entiere de l’ambroisie, et le DSS et DMS au pic de la saison. Resultats Les ameliorations relatives du TCS avec le cp ambroisie par rapport au placebo etaient de −38,3 % (IC95 %, −46,0 %, −29,7 % ; difference moyenne des moindres carres [DMMC] = 2,73 ; p Conclusion Il s’agit de l’etude menee chez le plus grand nombre d’enfants souffrant de RA/C au pollen d’ambroisie, qui montre que le cp ambroisie ameliore significativement les symptomes et diminue le recours aux medicaments de secours. Le traitement a ete bien tolere.
- Published
- 2020
15. Adaptation posologique chez les patients insuffisants rénaux chroniques et évaluation de la fonction rénale : focus sur les patients de cardiologie
- Author
-
Nicolas Janus, Gilbert Deray, Sarah Zimner-Rapuch, S. Amet, and Vincent Launay-Vacher
- Subjects
Drug ,education.field_of_study ,medicine.medical_specialty ,business.industry ,media_common.quotation_subject ,Population ,Renal function ,Disease ,urologic and male genital diseases ,Drug overdose ,medicine.disease ,female genital diseases and pregnancy complications ,Dabigatran ,medicine ,Cardiology and Cardiovascular Medicine ,education ,Intensive care medicine ,business ,Progressive disease ,medicine.drug ,media_common ,Kidney disease - Abstract
Chronic kidney disease is a progressive disease which has become a real public health issue. In patients with renal disease, drugs pharmacokinetics may be altered. The handling of drugs requires a special attention in these patients. Indeed, there is a risk of accumulation and drug overdose if dosage is not adjusted to the stage of renal insufficiency. Thus, to achieve a dosage adjustment knowing how to evaluate renal function is absolutely necessary. Different formulae are available including the Cockcroft and Gault formula aMDRD and CKD-EPI. In patients with cardiac issues, it appears that the CKD-EPI formula is that of choice in terms of clinical risk stratification. However, some summaries of product characteristics (SmPC) of drugs used in cardiology, such as Dabigatran(®), mention the need to use the Cockcroft-Gault, less accurate than aMDRD and CKD-EPI, in order to adjust the dose in patients with impaired renal function. Standardization of recommendations is necessary to limit disparities in dosage and drug exposure according to the formula. SmPCs however, are not the only source of information to obtain data on the use of drugs in the renal insufficient population. Some other information sources exist, reliable, updated and easily accessible.
- Published
- 2015
16. Acute renal failure associated with the new BRAF inhibitor vemurafenib: A case series of 8 patients
- Author
-
S. Amet, Gilbert Deray, Nicolas Poulalhon, Morgane Gosselin, Valérie Garrigue, Vincent Launay-Vacher, Thibault Fraisse, Sarah Zimner-Rapuch, and Nicolas Janus
- Subjects
Oncology ,Cancer Research ,medicine.medical_specialty ,business.industry ,Melanoma ,Dacarbazine ,medicine.medical_treatment ,Renal function ,Cancer ,medicine.disease ,Surgery ,Targeted therapy ,Nephrotoxicity ,Internal medicine ,medicine ,Vemurafenib ,business ,medicine.drug ,Kidney disease - Abstract
BACKGROUND Vemurafenib is a BRAF inhibitor that has become the cornerstone of metastatic or inoperable melanoma therapy since its approval in 2011 in the United States and 2012 in Europe. This targeted therapy has shown impressive results in terms of increased progression-free and overall survival as compared to dacarbazine. The safety profile did not include any renal manifestations at that time. METHODS This report is the first case series of 8 patients who experienced significant to severe renal insufficiency under vemurafenib treatment. RESULTS This case series shows that vemurafenib may induce potentially severe acute renal failure, including renal sequelae and persistent kidney disease in some cases. CONCLUSIONS Further studies are needed to investigate the effects of vemurafenib on the kidneys. Meanwhile, renal function should be closely monitored in treated patients for early detection of any renal dysfunction occurrence. Cancer 2014;120:2158–2163. © 2014 American Cancer Society.
- Published
- 2014
17. CESAR – Proportion des épisodes d’exacerbations d’asthme et de rhinite chez les patients allergiques aux acariens auxquels est proposée une immunothérapie sublinguale
- Author
-
S. Amet, C. Chenivesse, A. Chartier, J.-P. Meunier, and L. de Gabory
- Subjects
Epidemiology ,Public Health, Environmental and Occupational Health - Abstract
Introduction Les exacerbations d’asthme et de rhinite sont associees a une alteration de la qualite de vie, une augmentation de la morbidite/mortalite pour l’asthme ainsi qu’un recours a la corticotherapie systemique. Leur frequence et leur severite chez les patients allergiques aux acariens est peu decrite. L’objectif de cette etude etait la description des exacerbations d’allergie respiratoire aux acariens dans l’annee ecoulee : exacerbations de RA (symptomes ayant impacte le traitement habituel avec QDV degradee) et/ou exacerbations d’asthme, chez des patients a qui etait proposee une immunotherapie allergenique (ITA) sublinguale. Methode Il s’agissait d’une etude observationnelle transversale aupres d’allergologues. Tout patient âge de plus de 5 ans ayant une RA aux acariens jugee severe et sans ITA depuis 12 mois etait eligible. Le patient renseignait un auto-questionnaire sur les evenements des 12 derniers mois. Resultats Au total, 151 medecins ont inclus 1725 patients, dont 30,4 % d’enfants de 5 a 11 ans (âge moyen 8,4 ans, 64,3 % d’hommes), 17,7 % d’adolescents (14,2 ans, 56,6 %) et 51,9 % d’adultes (34,6 ans, 42,3 %). L’anciennete moyenne de la RA etait respectivement de 1,3 ans ± 1,7, 2,6 ± 3,3 ans, 4,5 ± 7,6 ans. La proportion d’asthmatiques (572 patients) etait selon l’âge de 42,6 %, 36,8 %, 29,0 %. Selon ARIA 2010, on retrouvait 48,6 % de RA persistante severe (RAPS) sans asthme, 22,1 % RAPS avec asthme et 11,9 % d’asthme sans RAPS. La frequence moyenne des exacerbations de RA etait : 2,4 ± 3,5 chez les enfants, 4,6 ± 26,8 (ado.), 4,8 ± 22,8 (adultes). Les patients ayant eu au moins une exacerbation de RA avec QDV tres impactee etaient 28,8 % (enf.), 27,8 % (ado.) et 40,1 % (adultes). Les patients ont eu en moyenne en 12 mois 3,9 ± 23,5 exacerbations d’asthme (enf.), 2,8 ± 7,2 (ado.) et 2,5 ± 4,9 (adultes) et ont presente au moins 2 exacerbations respectivement pour 46,2 %, 37,7 % et 44,9 %. Les patients rapportent en moyenne 3,1 exacerbations d’asthme par an, et 4,1 exacerbations de RA (duree moy. 2 semaines) et avec un impact considere important par 30 a 40 % des patients. Conclusion Les allergies respiratoires aux acariens, modele de chronicite, presentent de nombreuses poussees evolutives aussi bien bronchiques que nasales qui s’additionnent dans un contexte deja severe pour deteriorer la qualite de vie. La description de cette population souligne l’importance de proposer un traitement etiologique de desensibilisation.
- Published
- 2019
18. CESAR : exacerbations d’asthme et de rhinite chez les patients allergiques aux acariens éligibles à une immunothérapie sublinguale
- Author
-
C. Chenivesse, S. Amet, J.-P. Meunier, A. Chartier, and L. Le Taillandier de Gabory
- Subjects
Immunology and Allergy - Abstract
Introduction Les exacerbations d’asthme (EA) et de rhinite (ER) entrainent une alteration de la qualite de vie (QDV), une augmentation de la morbidite-mortalite pour l’asthme et du recours a la corticotherapie systemique. L’objectif de cette etude etait la description des exacerbations d’allergie respiratoire aux acariens dans l’annee ecoulee : ER et/ou EA (symptomes ayant entraine au moins une modification du traitement habituel ou une hospitalisation ou visite improvisee chez le medecin), chez des patients a qui etait proposee une immunotherapie allergenique (ITA) sublinguale. Methodes Etude observationnelle prospective transversale realisee de septembre 2017 a mai 2018 aupres d’allergologues. Tout patient de plus de 5 ans ayant une RA aux acariens avec ou sans asthme et sans ITA depuis au moins 12 mois etait eligible. Le medecin renseignait un cahier d’observation et le patient un auto-questionnaire sur les evenements des 12 derniers mois. Resultats Au total, 1725 patients ont ete inclus dont 30 % d’enfants de 5 a 11 ans (âge moyen 8 ans, 64 % ♂) 18 % d’adolescents (14 ans, 57 % ♂) et 52 % d’adultes (35 ans, 42 % ♂), polysensibilises dans 54 % des cas ; l’anciennete moyenne de la RA etait respectivement de 1 (± 2) an, 3 (± 3) ans et 4 (± 8) ans. Selon ARIA 2010, la RA etait persistante severe dans 71 % des cas, persistante legere dans 18 %, intermittente severe dans 2 %, intermittente legere dans 9 %. Les patients decrivaient en moyenne 4 (± 20) ER et selon l’âge : 2 (± 3), 5 (± 27) et 5 (± 23) ER ; d’une duree moyenne de 18 (± 37) jours avec principalement 3 symptomes de rhinite (eternuements, rhinorrhee, obstruction nasale). Ces ER s’accompagnaient d’une degradation importante de la QDV selon l’âge dans 29 %, 28 % et 40 %. Les patients asthmatiques (33 %) se repartissaient comme suit : 43 %, 37 % et 29 % selon l’âge et decrivaient en moyenne 4 (± 23), 3 (± 7) et 2 (± 5) EA. Conclusion Les allergies respiratoires aux acariens, modele de chronicite, presentent de nombreuses poussees evolutives bronchiques ou nasales qui se conjuguent pour deteriorer la qualite de vie. La description de cette population souligne l’importance de proposer un traitement preventif des exacerbations.
- Published
- 2019
19. Néphrotoxicité des médicaments
- Author
-
Sarah Zimner-Rapuch, Gilbert Deray, S. Amet, Nicolas Janus, and Vincent Launay-Vacher
- Subjects
Gynecology ,Medical Laboratory Technology ,Acute interstitial nephritis ,medicine.medical_specialty ,business.industry ,Biochemistry (medical) ,Acute kidney injury ,Medicine ,Chronic renal disease ,business ,medicine.disease ,Analytical Chemistry - Abstract
Resume Les effets renaux des medicaments se manifestent par divers mecanismes et peuvent potentiellement toucher toutes les parties du rein. Il existe six types d’atteintes renales induites par les medicaments: les atteintes prerenales ; les nephropathies tubulaires ; les nephropathies interstitielles ; les nephropathies glomerulaires ; les nephropathies vasculaires et les nephropathies obstructives, telles que les cristalluries, les insuffisances renales aigues secondaires a des rhabdomyolyses, etc. La nephrotoxicite des medicaments survient principalement chez des patients ayant des facteurs de risque sous-jacents, pouvant rendre le rein plus fragile aux effets iatrogenes. On distingue les facteurs de risque lies au patient (âges extremes, hypovolemie, insuffisance renale chronique preexistante…), ceux lies au rein et ceux lies au traitement (posologie non adaptee, nephrotoxicite cumulee, diuretiques, anti-inflammatoires non steroidiens…). La connaissance des facteurs de risque et des mecanismes de nephrotoxicite sont la base d’une meilleure prevention et egalement d’une meilleure prise en charge de ces patients.
- Published
- 2013
20. Administration of intravenous iron complexes on implantable central venous access port in cancer patients in France: the FERPAC survey
- Author
-
Florian Scotté, Gilbert Deray, Lorraine Zakin, Lamine Mahi, Jean-Baptiste Rey, Nicolas Janus, S. Amet, Vincent Launay-Vacher, and Laurence Rouillon
- Subjects
Pediatrics ,medicine.medical_specialty ,Anemia ,medicine.medical_treatment ,Iron sucrose ,Ferric Compounds ,Glucaric Acid ,Route of administration ,Port (medical) ,Neoplasms ,Surveys and Questionnaires ,Internal medicine ,medicine ,Central Venous Catheters ,Humans ,Practice Patterns, Physicians' ,Infusions, Intravenous ,Maltose ,Ferric Oxide, Saccharated ,Chemotherapy ,Anemia, Iron-Deficiency ,business.industry ,Cancer ,Iron deficiency ,medicine.disease ,Thrombosis ,Oncology ,France ,business ,medicine.drug - Abstract
Implantable central venous access port (portacath) is used to provide long-term venous access and to deliver chemotherapy in cancer patients. Intravenous iron complexes are frequently prescribed in this setting, and some physicians use a portacath for their administration. The aim of this survey was to assess the frequency of this practice and the reasons supporting it. This declarative survey was conducted in France; 497 oncologists/hematologists were contacted to answer a survey on their practices regarding the administration of intravenous iron via a portacath. A total of 141 recipients (29.5 %) completed the questionnaire. The intravenous iron complexes most frequently used were iron sucrose and ferric carboxymaltose, and 55.2 % of the responders reported using a portacath to administer intravenous iron complexes. The main reasons mentioned for this practice were ease of administration (27.9 %) and preservation of venous capital (27.6 %). The main reasons reported for not using a portacath to administer intravenous iron were a history of thrombosis (45.1 %) or potential drug interactions (17.7 %). Efficacy and safety were expected to be similar to those observed with peripheral administration. A 47.6 % of physicians declared that they usually did not observe adverse reactions after use of a portacath for iron administration. Intravenous iron administration was always planned after chemotherapy for 46.6 % of the responders and before chemotherapy for 38.2 %, whereas 15.3 % did not have any preference for either option. Intravenous iron complexes (mainly iron sucrose and ferric carboxymaltose) are commonly administered through a portacath in cancer patients in France. The choice for this route of administration is supported by clinical considerations, but further studies are needed to confirm the efficacy and safety of this practice.
- Published
- 2013
21. Pulmonary Hypertension: Use of Oral Drugs in Patients with Renal Insufficiency
- Author
-
Gilbert Deray, Nicolas Janus, S. Amet, Vincent Launay-Vacher, and Sarah Zimner-Rapuch
- Subjects
Drug ,medicine.medical_specialty ,Hypertension, Pulmonary ,media_common.quotation_subject ,Administration, Oral ,Renal function ,Blood Pressure ,Disease ,Kidney ,Pharmacotherapy ,Internal medicine ,medicine ,Humans ,Drug Dosage Calculations ,Pharmacology (medical) ,Renal Insufficiency ,Antihypertensive Agents ,media_common ,business.industry ,Kidney metabolism ,General Medicine ,medicine.disease ,Pulmonary hypertension ,Treatment Outcome ,Erectile dysfunction ,Cardiology ,business ,Kidney disease - Abstract
Pulmonary hypertension (PH) is a progressive, fatal pulmonary circulatory disease that is characterized by elevated pulmonary arterial pressure and secondary right ventricular failure. PH has been reported to be highly prevalent in patients with chronic kidney disease, and especially among end-stage renal disease patients undergoing haemodialysis. However, only few data are available on drug dosage adjustment to renal function for those drugs that are commonly used in the treatment of PH. We reviewed the literature and gathered information, although sparse, to propose guidelines for using these drugs in renal insufficiency patients.
- Published
- 2012
22. Epidemiology and outcome research in CKD 5D
- Author
-
L. Coentrao, C. Ribeiro, C. Santos-Araujo, R. Neto, M. Pestana, W. Kleophas, A. Karaboyas, Y. LI, J. Bommer, R. Pisoni, B. Robinson, F. Port, G. Celik, B. Burcak Annagur, M. Yilmaz, T. Demir, F. Kara, K. Trigka, P. Dousdampanis, N. Vaitsis, S. Aggelakou-Vaitsi, K. Turkmen, I. Guney, F. Turgut, L. Altintepe, H. Z. Tonbul, E. Abdel-Rahman, P. Sclauzero, G. Galli, G. Barbati, M. Carraro, G. O. Panzetta, M. Van Diepen, M. Schroijen, O. Dekkers, F. Dekker, A. Sikole, G. Severova- Andreevska, L. Trajceska, S. Gelev, V. Amitov, S. Pavleska- Kuzmanovska, H. Rayner, R. Vanholder, M. Hecking, B. Jung, M. Leung, F. Huynh, T. Chung, S. Marchuk, M. Kiaii, L. Er, R. Werb, C. Chan-Yan, M. Beaulieu, P. Malindretos, P. Makri, G. Zagkotsis, G. Koutroumbas, G. Loukas, E. Nikolaou, M. Pavlou, E. Gourgoulianni, M. Paparizou, M. Markou, E. Syrgani, C. Syrganis, J. Raimann, L. A. Usvyat, V. Bhalani, N. W. Levin, P. Kotanko, X. Huang, P. Stenvinkel, A. R. Qureshi, U. Riserus, T. Cederholm, P. Barany, O. Heimburger, B. Lindholm, J. J. Carrero, J. H. Chang, J. Y. Sung, J. Y. Jung, H. H. Lee, W. Chung, S. Kim, J. S. Han, K. Y. Na, A. Fragoso, A. Pinho, A. Malho, A. P. Silva, E. Morgado, P. Leao Neves, N. Joki, Y. Tanaka, M. Iwasaki, S. Kubo, T. Hayashi, Y. Takahashi, K. Hirahata, Y. Imamura, H. Hase, C. Castledine, J. Gilg, C. Rogers, Y. Ben-Shlomo, F. Caskey, J. S. Sandhu, G. S. Bajwa, S. Kansal, J. Sandhu, A. Jayanti, M. Nikam, L. Ebah, A. Summers, S. Mitra, J. Agar, A. Perkins, R. Simmonds, A. Tjipto, S. Amet, V. Launay-Vacher, M. Laville, A. Tricotel, C. Frances, B. Stengel, J.-Y. Gauvrit, N. Grenier, G. Reinhardt, O. Clement, N. Janus, L. Rouillon, G. Choukroun, G. Deray, A. Bernasconi, R. Waisman, A. P. Montoya, A. A. Liste, R. Hermes, G. Muguerza, R. Heguilen, E. L. Iliescu, V. Martina, M. A. Rizzo, P. Magenta, L. Lubatti, G. Rombola, M. Gallieni, C. Loirat, H. Mellerio, M. Labeguerie, B. Andriss, E. Savoye, M. Lassale, C. Jacquelinet, C. Alberti, Y. Aggarwal, J. Baharani, S. Tabrizian, S. Ossareh, M. Zebarjadi, P. Azevedo, F. Travassos, I. Frade, M. Almeida, J. Queiros, F. Silva, A. Cabrita, R. Rodrigues, C. Couchoud, J. Kitty, S. Benedicte, C. Fergus, C. Cecile, B. Sahar, V. Emmanuel, J. Christian, E. Rene, H. Barahimi, M. Mahdavi-Mazdeh, M. Nafar, M. Petruzzi, M. De Benedittis, M. Sciancalepore, L. Gargano, P. Natale, M. C. Vecchio, V. Saglimbene, F. Pellegrini, G. Gentile, P. Stroumza, L. Frantzen, M. Leal, M. Torok, A. Bednarek, J. Dulawa, E. Celia, R. Gelfman, J. Hegbrant, C. Wollheim, S. Palmer, D. W. Johnson, P. J. Ford, J. C. Craig, G. F. Strippoli, M. Ruospo, B. El Hayek, B. Hayek, E. Baamonde, E. Bosch, J. I. Ramirez, G. Perez, A. Ramirez, A. Toledo, M. M. Lago, C. Garcia-Canton, M. D. Checa, B. Canaud, B. Lantz, A. Granger-Vallee, P. Lertdumrongluk, N. Molinari, J. Ethier, M. Jadoul, B. Gillespie, C. Bond, S. Wang, T. Alfieri, P. Braunhofer, B. Newsome, M. Wang, B. Bieber, M. Guidinger, L. Zuo, X. Yu, X. Yang, J. Qian, N. Chen, J. Albert, Y. Yan, S. Ramirez, M. Beresan, A. Lapidus, M. Canteli, A. Tong, B. Manns, J. Craig, G. Strippoli, M. Mortazavi, B. Vahdatpour, S. Shahidi, A. Ghasempour, D. Taheri, S. Dolatkhah, A. Emami Naieni, M. Ghassami, M. Khan, K. Abdulnabi, P. Pai, M. Vecchio, M. A. Muqueet, M. J. Hasan, M. A. Kashem, P. K. Dutta, F. X. Liu, L. Noe, T. Quock, N. Neil, G. Inglese, M. Motamed Najjar, B. Bahmani, A. Shafiabadi, J. Helve, M. Haapio, P.-H. Groop, C. Gronhagen-Riska, P. Finne, R. Sund, M. Cai, S. Baweja, A. Clements, A. Kent, R. Reilly, N. Taylor, S. Holt, L. Mcmahon, M. Carter, F. M. Van der Sande, J. Kooman, R. Malhotra, G. Ouellet, E. L. Penne, S. Thijssen, M. Etter, A. Tashman, A. Guinsburg, A. Grassmann, C. Barth, C. Marelli, D. Marcelli, G. Von Gersdorff, I. Bayh, L. Scatizzi, M. Lam, M. Schaller, T. Toffelmire, Y. Wang, P. Sheppard, L. Neri, V. A. Andreucci, L. A. Rocca-Rey, S. V. Bertoli, D. Brancaccio, G. De Berardis, G. Lucisano, D. Johnson, A. Nicolucci, C. Bonifati, S. D. Navaneethan, V. Montinaro, M. Zsom, A. Bednarek-Skublewska, G. Graziano, J. N. Ferrari, A. Santoro, A. Zucchelli, G. Triolo, S. Maffei, S. De Cosmo, V. M. Manfreda, L. Juillard, A. Rousset, F. Butel, S. Girardot-Seguin, T. Hannedouche, M. Isnard, Y. Berland, P. Vanhille, J.-P. Ortiz, G. Janin, P. Nicoud, M. Touam, E. Bruce, B. Grace, P. Clayton, A. Cass, S. Mcdonald, Y. Furumatsu, T. Kitamura, N. Fujii, S. Ogata, H. Nakamoto, K. Iseki, Y. Tsubakihara, C.-C. Chien, J.-J. Wang, J.-C. Hwang, H.-Y. Wang, W.-C. Kan, N. Kuster, L. Patrier, A.-S. Bargnoux, M. Morena, A.-M. Dupuy, S. Badiou, J.-P. Cristol, J.-M. Desmet, V. Fernandes, F. Collart, N. Spinogatti, J.-M. Pochet, M. Dratwa, E. Goffin, J. Nortier, D. S. Zilisteanu, M. Voiculescu, E. Rusu, C. Achim, R. Bobeica, S. Balanica, T. Atasie, S. Florence, S. Anne-Marie, L. Michel, C. Cyrille, A. Strakosha, N. Pasko, S. Kodra, N. Thereska, A. Lowney, E. Lowney, R. Grant, M. Murphy, L. Casserly, T. O' Brien, W. D. Plant, J. Radic, D. Ljutic, V. Kovacic, M. Radic, K. Dodig-Curkovic, M. Sain, I. Jelicic, T. Hamano, C. Nakano, S. Yonemoto, A. Okuno, M. Katayama, Y. Isaka, M. Nordio, A. Limido, M. Postorino, M. Nichelatti, M. Khil, I. Dudar, V. Khil, I. Shifris, M. Momtaz, A. R. Soliman, M. I. El Lawindi, P. Dzekova-Vidimliski, S. Pavleska-Kuzmanovska, I. Nikolov, G. Selim, T. Shoji, R. Kakiya, N. Tatsumi-Shimomura, Y. Tsujimoto, T. Tabata, H. Shima, K. Mori, S. Fukumoto, H. Tahara, H. Koyama, M. Emoto, E. Ishimura, Y. Nishizawa, and M. Inaba
- Subjects
Transplantation ,medicine.medical_specialty ,Nephrology ,business.industry ,Epidemiology ,Medicine ,business ,Intensive care medicine ,Outcome (game theory) - Published
- 2012
23. Toxicité rénale des produits de contraste chez le patient oncologique
- Author
-
S. Amet and Gilbert Deray
- Subjects
Cancer Research ,Oncology ,Radiology, Nuclear Medicine and imaging ,Hematology ,General Medicine - Abstract
Resume Les patients oncologiques sont regulierement exposes a l’imagerie medicale lors du diagnostic mais aussi pour evaluer leurs reponses aux traitements. Ces patients sont egalement a fort risque d’insuffisance renale avant meme de regarder la potentielle nephrotoxicite de leur chimiotherapie. Dans ce contexte, connaitre les risques lies aux produits de contraste et les bonnes pratiques a adopter pour les eviter est indispensable. L’evaluation de la fonction renale y prend une place importante. La radiologie par rayons X utilisant les produits de contraste iodes (PCI) expose les patients a une insuffisance renale aigue. La nephropathie induite sera prevenue par une hydratation prealable a l’injection quand le debit de filtration glomerulaire du patient est inferieur a 60 mL/min/1,73 m 2 . Longtemps consideres comme une alternative securisante aux PCI car pratiquement non nephrotoxiques, les produits a base de gadolinium utilises en imagerie a resonance magnetique peuvent induire une fibrose nephrogenique systemique (FNS). Les recommandations europeennes et americaines des agences de sante se sont rapprochees recemment definissant des groupes a risque de FNS en fonction de leur niveau de fonction renale et du type de produits gadolines utilises. Comment evaluer la balance benefice-risque du patient oncologique pour lui choisir un examen radiologique informatif, efficace et sur ?
- Published
- 2012
24. Toxicités des chélates de gadolinium chez le patient insuffisant rénal
- Author
-
Vincent Launay-Vacher, E Ledneva, S. Amet, Nicolas Janus, and Gilbert Deray
- Subjects
Hematology - Abstract
Les chelates de gadolinium (Gd) sont des produits de contraste utilises au cours d’examen d’imagerie par resonance magnetique (IRM). A l’origine, ces medicaments etaient presentes comme des produits bien toleres tant sur le plan renal qu’extrarenal. Toutefois, plusieurs etudes ont rapporte des cas de nephrotoxicites induites par des produits de contraste a base de chelates de Gd. Dans la majorite des cas, l’atteinte renale etait observee apres une administration intra-arterielle de ces produits, a des doses superieures a 0,2 mmol/kg et chez des patients ayant une insuffisance renale preexistante. Le mecanisme responsable de cette nephrotoxicite n’a pas ete clairement decrit. De plus, plusieurs chelates de Gd semblent etre responsables d’un effet indesirable rare et severe, chez les patients insuffisants renaux chroniques, la fibrose nephrogenique systemique (FNS). Cet effet indesirable semble lie a l’utilisation de chelates de Gd de type lineaire, qui, dans certaines conditions, deviendraient instables et libereraient le Gd de son chelate, provoquant ainsi la FNS. Les facteurs de risque de cette maladie ne sont pas encore connus, a l’exception de l’insuffisance renale et de l’utilisation de ces produits. Cette revue de la litterature a pour but de faire la synthese des possibles effets renaux des produits de contraste a base de chelate de Gd, ainsi que de faire le point sur la FNS.
- Published
- 2010
25. Loss and dynamic magnetic field measurements in LHC dipoles
- Author
-
S. Amet, L. Bottura, I. Balaazi, P. Pugnat, A. Akhmetov, M. Gateau, and Louis Walckiers
- Subjects
Physics ,Field (physics) ,Force between magnets ,Superconducting magnet ,Condensed Matter Physics ,Accelerators and Storage Rings ,Electronic, Optical and Magnetic Materials ,Magnetic field ,Dipole ,Nuclear magnetic resonance ,Harmonics ,Magnet ,Harmonic ,Electrical and Electronic Engineering ,Atomic physics - Abstract
Knowledge of AC loss and dynamic magnetic field distortion in the main LHC dipoles is both important for the assessment of the accelerator performance and providing insight into the properties of assembled magnets. We measured the loss due to the current cycling in a few 1-meter long model dipoles, 15-meter long dipole prototypes and pre-series magnets. As expected the loss depends linearly on the rate of the current change. From the slope of this dependence, the contact resistance between the strands of the opposite layers of the cable, R/sub c/, was evaluated for the inner winding of the dipole. We discuss the method to estimate the R/sub c/ value in the outer winding. The R/sub c/ value has been also derived independently from measurements of the magnetic field. For this, the ramp rate dependent component of the main field as well as of the harmonics has been measured. The main magnetic field measurements were performed using both stationary coils and Hall probes. Rotating coils were used to perform the harmonic measurements.
- Published
- 2002
26. Measurement and analysis of the field quality of LHC prototype and pre-series superconducting dipoles
- Author
-
Ezio Todesco, S. Sanfilippo, Stephan Russenschuck, S. Amet, Marco Buzio, Paolo Ferracin, W. Scandale, Z. Ang, V. Remondino, L. Bottura, O. Pagano, and M. Aleksa
- Subjects
Physics ,Large Hadron Collider ,Field strength ,Superconducting magnetic energy storage ,Superconducting magnet ,Condensed Matter Physics ,Accelerators and Storage Rings ,Electronic, Optical and Magnetic Materials ,Magnetic field ,Nuclear physics ,Dipole ,Magnetization ,Electromagnetic coil ,Electrical and Electronic Engineering - Abstract
We report the main results of the magnetic field measurements performed on the full-size LHC superconducting dipoles tested at CERN since summer 1998. Main field strength and field errors are summarised. We discuss in detail the contributions related to the geometry of the collared coil, the assembled cold mass, cool-down effects, magnetisation of the superconducting cable and saturation effects at high field. Dynamic effects on field harmonics, such as the field decay during injection and field errors during current ramps, are assessed statistically.
- Published
- 2002
27. Prevalence of renal abnormalities in chronic HBV infection: the HARPE study
- Author
-
Stanislas Pol, Gilbert Deray, Yves Benhamou, Jean-Pierre Bronowicki, S. Amet, Victor de Ledinghen, Philippe Mathurin, Marc Bourlière, Nicolas Janus, Dominique Thabut, Fabien Zoulim, Dominique Larrey, Vincent Launay-Vacher, Service information conseil adaptation rénale [CHU Pitié-Salpêtrière] (Icar), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Nutrition-Génétique et Exposition aux Risques Environnementaux (NGERE), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Service d'Hépato-Gastro-Entérologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service d'Hépatologie [Hôpital de la Croix-Rousse - HCL], Hôpital de la Croix-Rousse [CHU - HCL], Hospices Civils de Lyon (HCL)-Hospices Civils de Lyon (HCL), Centre de Recherche en Cancérologie de Lyon (UNICANCER/CRCL), Centre Léon Bérard [Lyon]-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Service d'hépato-gastro-entérologie, Assistance Publique - Hôpitaux de Marseille (APHM), Service d'Hépato-gastroentérologie, Hôpital Huriez-Université de Lille, Service d'Hépato-Gastro-Entérologie, CHU Bordeaux [Bordeaux]-Hôpital Saint-André, Service de Neurologie [CHU Pitié-Salpêtrière], IFR70-CHU Pitié-Salpêtrière [AP-HP], Département d'Hépato-Gastroentérologie et de Transplantation Hépatique [CHU Saint-Eloi], Université de Montpellier (UM)-CHU Saint-Eloi, Service d'hépatologie médicale [CHU Cochin], Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de neurologie 1 [CHU Pitié-Salpétrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Hôpital Saint Eloi (CHRU Montpellier), and Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Université de Montpellier (UM)
- Subjects
Glycosuria ,Adult ,Male ,medicine.medical_specialty ,Pathology ,HBsAg ,[SDV]Life Sciences [q-bio] ,Population ,Renal function ,medicine.disease_cause ,Gastroenterology ,Hepatitis B, Chronic ,Diabetes mellitus ,Internal medicine ,medicine ,Diabetes Mellitus ,Prevalence ,Humans ,Prospective Studies ,education ,Dyslipidemias ,Hepatitis B virus ,education.field_of_study ,Proteinuria ,Hepatitis B Surface Antigens ,Hepatology ,business.industry ,Middle Aged ,medicine.disease ,3. Good health ,Cross-Sectional Studies ,Creatinine ,Hypertension ,Linear Models ,Female ,Kidney Diseases ,medicine.symptom ,business ,Biomarkers ,Kidney disease - Abstract
International audience; Background & AimsFew data are available on the prevalence of renal abnormalities in chronic hepatitis B virus (HBV)-infected patients. The multicentric cross-sectional HARPE study evaluated the prevalence of kidney disease indicators, in chronic HBV surface antigen carriers patients (HBsAg+) with active or inactive infection.Patients and methodsTwo hundred and sixty-eight HBsAg+ adult patients, naïve of any oral antihepatitis B virus treatment were prospectively included over 2 years. Data for renal assessment were collected once from patient files. Univariate tests and multiple linear regressions were performed with the SAS software, version 8.02 (SAS, Inc., Cary, NC, USA).ResultsAmong the 260 patients analysed, 58% were men, the mean age was 42 ± 14 years, 59.6% were inactive carriers whereas 47 patients, mostly active, were about to start an antiviral therapy. Prevalence of proteinuria, haematuria, glycosuria, uninfectious leukocyturia was 38.1%, 20.6%, 3.9% and 9% respectively. According to the international definition, a total of 64.6% of patients were found to have kidney disease. Diabetes, hypertension and dyslipidaemia were observed, respectively, in 4.6%, 9.2% and 38.8% patients. There were no significant differences in these results within the three subgroups.ConclusionRenal abnormalities are highly prevalent in our population and pre-exist before the initiation of any antihepatitis B virus treatment. This emphasizes the need for: (i) a baseline renal evaluation in all HBs antigen-positive patients; (ii) a regular renal monitoring before and during antihepatitis B virus treatment to diagnose and manage renal impairment and adjust antihepatitis B virus treatment doses to renal function when necessary.
- Published
- 2013
28. [Drug dosage adjustment in patients with renal impairment and evaluation of renal function: focus on the cardiologic patients]
- Author
-
S, Zimner-Rapuch, S, Amet, N, Janus, G, Deray, and V, Launay-Vacher
- Subjects
Drug Therapy ,Heart Diseases ,Humans ,Pharmacokinetics ,Renal Insufficiency, Chronic ,Kidney Function Tests - Abstract
Chronic kidney disease is a progressive disease which has become a real public health issue. In patients with renal disease, drugs pharmacokinetics may be altered. The handling of drugs requires a special attention in these patients. Indeed, there is a risk of accumulation and drug overdose if dosage is not adjusted to the stage of renal insufficiency. Thus, to achieve a dosage adjustment knowing how to evaluate renal function is absolutely necessary. Different formulae are available including the Cockcroft and Gault formula aMDRD and CKD-EPI. In patients with cardiac issues, it appears that the CKD-EPI formula is that of choice in terms of clinical risk stratification. However, some summaries of product characteristics (SmPC) of drugs used in cardiology, such as Dabigatran(®), mention the need to use the Cockcroft-Gault, less accurate than aMDRD and CKD-EPI, in order to adjust the dose in patients with impaired renal function. Standardization of recommendations is necessary to limit disparities in dosage and drug exposure according to the formula. SmPCs however, are not the only source of information to obtain data on the use of drugs in the renal insufficient population. Some other information sources exist, reliable, updated and easily accessible.
- Published
- 2013
29. Malaria prophylaxis in patients with renal impairment: a review
- Author
-
Sarah Zimner-Rapuch, S. Amet, Gilbert Deray, Nicolas Janus, and Vincent Launay-Vacher
- Subjects
medicine.medical_specialty ,Proguanil ,medicine.medical_treatment ,Plasmodium falciparum ,Toxicology ,Antimalarials ,Chloroquine ,parasitic diseases ,medicine ,Humans ,Pharmacology (medical) ,Drug Dosage Calculations ,Renal replacement therapy ,Renal Insufficiency ,Malaria, Falciparum ,Intensive care medicine ,Pharmacology ,Travel ,biology ,Mefloquine ,business.industry ,Malaria prophylaxis ,biology.organism_classification ,medicine.disease ,Immunology ,Drug Therapy, Combination ,business ,Atovaquone ,Malaria ,medicine.drug - Abstract
Malaria is an endemic and potentially lethal disease transmitted by the protozoan parasite Plasmodium. It is currently endemic in more than 100 countries, which are visited by 125 million international travellers every year. For dialysis and renal insufficiency patients it becomes increasingly easier to travel to these countries thanks to the recent advances in renal replacement therapy. However, the pharmacokinetics of some prophylactic agents in malaria are altered, which may modify the effectiveness and safety of such treatments and the way they should be prescribed. Clinicians should be aware of these alterations which require subsequent dosage adjustments. This review provides recommendations on the use of antimalarial drugs, alone or in combination, in patients with renal impairment. These recommendations depend on the prevalence of Plasmodium falciparum chloroquine resistance, as defined by the WHO. Furthermore, fixed-dose combinations cannot be used in patients with creatinine clearance below 60 mL/min since the tablets available do not allow appropriate dosage adjustment for each drug. Chloroquine and proguanil require dosage adjustments, while atovaquone, doxycycline and mefloquine do not.
- Published
- 2013
30. 405 HARPE STUDY: PREVALENCE OF RENAL ABNORMALITIES IN CHRONIC HBV INFECTION
- Author
-
Fabien Zoulim, E. Bruce, Dominique Larrey, Gilbert Deray, V. de Ledinghen, Vincent Launay-Vacher, Stanislas Pol, Yves Benhamou, M. Bourlière, S. Amet, Jean-Pierre Bronowicki, P. Mathurin, Dominique Thabut, and Nicolas Janus
- Subjects
Creatinine ,medicine.medical_specialty ,education.field_of_study ,Cirrhosis ,Multivariate analysis ,Hepatology ,business.industry ,Population ,Renal function ,medicine.disease ,Gastroenterology ,chemistry.chemical_compound ,chemistry ,Renal abnormalities ,Diabetes mellitus ,Internal medicine ,medicine ,Stage (cooking) ,business ,education - Abstract
Background and Aims: A close relationship exists between HBV infection and renal dysfunction. This study was undertaken to evaluate the degree of renal dysfunction in HBV positive patients in a university hospital in Mumbai and factors predicting it. Methods: We retrospectively analyzed 663 HBV positive patients presenting to our clinic from January 2010-June 2012 for renal dysfunction (estimated Glomerular Filtration rate (eGFR) by MDRD formula). Excluding 13 patients on maintenance hemodialysis and 66 with missing data, 584 patients (467 males; median age 43, range 9–80 years) were included. Results: Of 584 patients, 24 had acute hepatitis, 209 non-cirrhotic Chronic Hepatitis B (CHB), 214 were inactive carriers, 108 had CHB with cirrhosis, 22 were in immunotolerant phase, 6 had acuteon-chronic liver failure, 1 patient post liver transplant. Majority of patients were HBeAg negative (74.82%). 141 patients (24.1%) had comorbidities (diabetes mellitus and/or systemic hypertension). Serum creatinine was elevated (>1.5mg/ml) in 20 patients (2.7%) while eGFR (MDRD) was below normal ( 90ml/min/1.72m, 293 patients. Based on HBV disease status, renal function was different: In acute group (acute hepatitis, immunotolerant), 26.53% patients had mild renal dysfunction (eGFR 60–90ml/min/1.72m) versus chronic disease group (inactive carrier status, CHB, cirrhosis, others) with 44.49% (p =0.008). In multivariate analysis, age, gender, hypertension and chronic disease stage had significant association with reduced eGFR. 1 year follow-up eGFR values were available for 321 patients, of which 79 (25%) showed worsening of renal function by >20% while 58 patients (15%) showed >20% improvement. Within the cirrhotic population, Diabetes was significantly more prevalent than in other populations (33% of patients). 62/108 (57%) of cirrhotic patients had reduced renal function. Conclusion: HBV infection is associated with significant degree of reduced renal function, reaching up to 50% in the chronic population of our clinic. Comorbidities (25%) or antiviral treatment might further increase renal risk, therefore regular monitoring of renal function is recommended. MDRD formula was shown to be more sensitive than serum creatinine for renal function evaluation.
- Published
- 2013
31. Prévalence des anomalies rénales dans l’hépatite B chronique : résultats de l’étude HARPE
- Author
-
E. Bruce, Gilbert Deray, Philippe Mathurin, Jean-Pierre Bronowicki, Dominique Larrey, Dominique Thabut, Vincent Launay-Vacher, Fabien Zoulim, M. Bourlière, S. Amet, V. de Ledinghen, and Stanislas Pol
- Subjects
Nephrology - Published
- 2012
32. La formule aMDRD est la formule de choix pour évaluer la fonction rénale, y compris chez les patients de plus de 80ans : commentaire sur l’article de Andro et al
- Author
-
N Janus, G Deray, V Launay-Vacher, Sarah Zimner-Rapuch, and S. Amet
- Subjects
Gastroenterology ,Internal Medicine - Published
- 2011
33. Prise en charge de la douleur dans un service de néphrologie : résultats finaux de l’étude PAIN
- Author
-
Gilbert Deray, S. Amet, E. Bruce, E. Collin, Sarah Zimner-Rapuch, Nicolas Janus, C Isnard-Bagnis, M. Grimault, L. Rouillon, and Vincent Launay-Vacher
- Subjects
Nephrology - Published
- 2012
34. Prévalence de la fibrose néphrogénique systémique chez le patient dialysé : étude Pro-FINEST
- Author
-
Bénédicte Stengel, J.-Y. Gauvrit, C. Francès, Gabriel Choukroun, O. Clément, S. Amet, Gilbert Deray, Aurore Tricotel, Maurice Laville, Vincent Launay-Vacher, Nicolas Grenier, and G. Reinhardt
- Subjects
Nephrology - Abstract
Sabine Amet1 (sabine.amet@psl.aphp.fr), Jean-Yves Gauvrit2, Nicolas Grenier3, Genevieve Reinhardt4, Camille Frances5, Benedicte Stengel6, Anne Castot7, Carmen KreftJais7, Nicolas Janus1, Vincent LaunayVacher1, Gabriel Choukroun8, Maurice Laville9, Gilbert Deray10 et Olivier Clement11. Services de : 1ICAR, Nephrologie, Hopital Pitie Salpetriere, Paris; 2Radiologie, Hopital Pontchaillou, Rennes; 3Radiologie, Hopital Pellegrin, Bordeaux; 4Radiologie, Hopital d'Haguenau, Haguenau; 5Dermatologie, Hopital Tenon, Paris; 6Inserm U1018, Hopital Paul Brousse, Villejuif; 7Pharmacovigilance, Afssaps, SaintDenis; 8Nephrologie, Hopital Sud, Amiens; 9Nephrologie, Hopital E. Herriot, Lyon; 10Nephrologie, Hopital Pitie Salpetriere, Paris et 11Radiologie, Hopital Europeen G. Pompidou, Paris. Tous de France. INTRODUCTION ET OBJECTIFS
- Published
- 2012
35. Epidemiology & outcome in CKD 5D (2)
- Author
-
M. Fusaro, Tomoyuki Yamakawa, Nynke Halbesma, Ani Shamanadze, Jyoti Baharani, Nino Kankia, Federica Capurro, Maria Tsiatsiou, J. Thumma, Shunichi Fukuhara, Chris Maggs, Enrico Di Stasio, Peir-Haur Hung, S. Amet, Fabian Somers, Sergio Sisca, Caskey Yoav, Norio Hanafusa, Julie Gilg, Doriana Chiarinotti, Valeria Maria Saglimbene, Marco Amidone, C. Combe, Satyanarayana Reddy Vanga, Massimo Liberatori, Ilias Minasidis, M. Plebani, David Ansell, Yoav Ben-Shlomo, Chris A Rogers, Renata Kłak, Gilbert Deray, Marian Klinger, Carlo Navino, G. Crepaldi, Ikuto Masakane, Jorgen Hegbrant, Hiroshi Nishi, Brenda W. Gillespie, S. Maggi, Wei-Chih Kan, J. Zhang, Geison Stein, Francesco Pizzarelli, Giorgia De berardis, Mark Dominik Alscher, Belguzar Kara, Irakli Rtskhiladze, Jaime Madeira, Fergus Caskey, J. Brian Copley, Efstathios Mitsopoulos, João Paulo Martins, R. Cristofaro, Alan Kimber, Eleni Manou, Pasquale Esposito, Antonio Lupo, Jan Bartel, Fabio Pellegrini, Hal Morgenstern, Diana C. Grootendorst, David W. Johnson, Tamar Dzagania, A. D'Angelo, Tone Brit Hortemo Østhus, A. Naso, Paul Clesco, G. Ashuntantang, Rosamund Wilson, Varvara Kousoula, I-Nong Lee, Béla Borbás, Timothy Collier, Andreana De Mauri, Alexandre Hertig, Diogo Bento, Ana Cláudia Miranda, Dorothea Nitsch, Shigeichi Shoji, G. Tripepi, Cheng-Huang Shen, Jean-Yves Gauvrit, Anne Castot, Mariusz Kusztal, Toril Dammen, Joble Joseph, Dimitrios Chanouzas, Silvana Milani, Nicolas Grenier, Raymond T. Krediet, Wacław Kopeć, Sousuke Kagitani, Vittorio Ortalda, Olivier Clément, Pietro Dattolo, Chi-Joung Wang, Saskia le Cessie, Charles R.V. Tomson, Katarzyna Madziarska, Marilena Conte, Kenjiro Yamakawa, Vidojko Djordjevic, Bénédicte Stengel, Pei-Chun Chiang, Carmen Tzanno, Liljana Tozija, Clare Castledine, Krishna Appunu, Lucia Lisi, Stanimir Ljubenovic, Lela Zangurashvili, Eiji Ishimura, Clarissa Uezima, Martino De Leo, Megumi Sato, Shinichi Nishi, L. Calò, Ingrid Os, Maka Lomidze, Carmine Tinelli, Karolina Paunovic, Tewolde Yabarek, Honora Smith, João Cruz, Fernanda Nisihara, Eric Rondeau, Tomasz Gołębiowski, Tamar Khitarishvili, Masaaki Inaba, Nikola Stojcev, Paola Serbelloni, Nino Jashiashvili, Kunitoshi Iseki, Miomir Stojanovic, Ching-Tan Cheng, Magdalena Krajewska, Minoru Ito, Jonathan C. Craig, Józef Penar, Galina Severova Andreevska, Yuzuru Sato, Attilio Di Benedetto, Ewa Zukowska Szczechowska, Zorica Dimitrijevic, Nikoloz Abramishvili, David Metreveli, Senji Okuno, Saso Gelev, J. Harambat, Michele Messa, Pavlina Dzekova, Beatrix Szlanka, Kuan-Yu Hung, Yoshiki Nishizawa, Vili Amitov, S. Giannini, Antonio Dal Canton, Khatuna Buachidze, Marco Righetti, R. Pisoni, Maurice Laville, Chih-Yen Hsiao, Nicolas Janus, Carmen Kreft-Jais, Gianmichele Ferrario, Dinanda J. de Jager, Galina Severova, Bassam Fallouh, D. Miozzo, Satoko Ito, A.P. Kengue, Genevieve Reinhardt, Aleksandar Sikole, Yukinori Johtoku, Vincent Launay-Vacher, Svetlana Pavleska, N. Vajente, Giulia Antognoli, Naveed Aslam, Gjulsen Selim, Junichiro Nagasawa, Katarzyna Gosek, Amin Amro, M. Gallieni, Maka Barnova, Beata Strempska, Shang-Chih Liao, Dimitrios Tsakiris, Camille Francès, Yoshiharu Tsubakihara, Daniele Marcelli, Nicola Panocchia, Goran Paunovic, Mariangela De Maria, Eudoxia Ginikopoulou, Luigi Tazza, Stefano Michelassi, Annalisa De Silvestri, Irma Tschokhonelidze, Khai Ping Ng, Maria Tsikeloudi, Kunihiro Yamagata, Valjbona Preljevic, Olivera Stojceva-Taneva, Michael Smyth, Retha Steenkamp, Friedrich K. Port, Giovanni F.M. Strippoli, Christophe Ridel, Naoki Tsuboniwa, Kyoko Norimine, Chih-Chiang Chien, Adalberto Tommasi, Wacław Weyde, Gabriel Choukroun, Kenichi Kudo, Friedo W. Dekker, Paola David, Lada Trajcevska, Maurizio Bossola, Paul Roderick, Marie Patrice Halle, Peter Rutherford, Hsien-Yi Wang, Lada Trajceska, Elisabeth W. Boeschoten, Paola Tomei, Jyh-Chang Hwang, Nora Sarishvili, Torbjørn Leivestad, and Bruce G. Robinson
- Subjects
Transplantation ,medicine.medical_specialty ,Nephrology ,business.industry ,Epidemiology ,Medicine ,business ,Intensive care medicine ,Outcome (game theory) - Published
- 2011
36. Cross-sectional study to describe allergic rhinitis flare-ups and associated airways phenotype in house dust mite sensitization.
- Author
-
de Gabory L, Amet S, Le Maux A, Meunier JP, Chartier A, and Chenivesse C
- Subjects
- Male, Animals, Female, Quality of Life, Cross-Sectional Studies, Allergens, Treatment Outcome, Antigens, Dermatophagoides, Pyroglyphidae, Phenotype, Sublingual Immunotherapy, Rhinitis, Allergic drug therapy
- Abstract
Objectives: To quantify and describe flare-ups of house dust mite allergic rhinitis (HDM-AR) which had occurred during the last 12 months in a population of adults and children candidate for Allergen ImmunoTherapy (AIT). Next, to identify associated clinical features., Materials and Methods: This was an observational, multicenter, cross-sectional study that included patients aged ≥ 5 years with HDM-AR eligible for AIT and without prior AIT for at least 12 months. Flare-ups were all period with impairment of quality of life (QoL) and requiring a change in their usual treatment. Data were collected using medical records and patient questionnaires. Variables associated with the occurrence of ≥ 2 AR flare-ups were identified., Results: 1,701 patients were included (average age: 23 years, 51.5% males, 30.4% children, 17.7% adolescents and 51.9% adults). Severe and persistent AR affected 70.9% of them and 53.7% showed polysensitization. Asthma was associated with AR in 34.4% and was well-controlled in 58.5%. The occurrence of at least one AR flare-up in the year was reported by 77.7%, with an annual rate in the whole population of 2.6 ± 3.9 and a duration of 14.1 ± 17.1 days. Deeply or moderately AR-related degraded QoL was experienced by 39.5% and 64.6%, respectively. The occurrence of ≥ 2 AR flare-ups was reported by 54.5% and was associated with polysensitization, AR intermittence and severity., Conclusion: AR flare-ups are frequent and impair QoL in HDM-allergic patients, suggesting that it could be considered as therapeutic targets., Competing Interests: Ludovic de Gabory: Honoraria/Consulting: ALK-SAS, AstraZeneca, Chiesi, GlaxoSmithKline, Integra Life Science, Laboratoire de la Mer, Laboratoire Chemineau, Medtronic, Sanofi Genzyme, Zambon. Sabine Amet: ALK SAS corporate employee Annelore Le Maux: ALK SAS corporate employee Jean-Pierre Meunier: Manager of the CRO Axonal, which was designated by ALK to conduct the trial Antoine Chartier: ALK SAS corporate employee Cécile Chenivesse: Grants from AstraZeneca, Santelys Personal fees from ALK SAS, AstraZeneca, Boehringer Ingelheim, Chiesi, GlaxoSmithKline, Novartis, Sanofi-Regeneron, TEVA Congress support from ALK SAS, AstraZeneca, Boehringer Ingelheim, GlaxoSmithKlein, Novartis, Pierre Fabre, Pfizer, Roche, TEVA, (Copyright: © 2023 de Gabory et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2023
- Full Text
- View/download PDF
37. [Nephrotoxicity of antiretrovirals other than tenofovir].
- Author
-
Loens C, Amet S, Isnard-Bagnis C, Deray G, and Tourret J
- Subjects
- Humans, Kidney pathology, HIV Infections drug therapy, Kidney Diseases chemically induced, Reverse Transcriptase Inhibitors adverse effects, Tenofovir adverse effects
- Abstract
The remarkable improvement of the outcome of HIV infection came with the price of substantial toxicity of some antiretrovirals. The first molecules used to treat HIV included an important nephrotoxicity. Zalcitabine, stavudine and didanosine can induce severe lactic acidosis. Lactate production is enhanced and the renal capacity to regulate pH is overwhelmed. However, this side effect is not due to a direct dysfunction of the kidneys. Zalcitabine was withdrawn from the market because of this risk. Indinavir, a protease inhibitor, is soluble only in very acidic solutions. Consequently, the small fraction that is excreted in the urine precipitates and can be responsible for uro-nephrolithiasis, leukocyturia, cristalluria, obstructive acute kidney failure, and acute or chronic interstitial nephritis. This is the reason why indinavir is almost not prescribed nowadays, even if it is still marketed. In addition to the direct nephrotoxicity of some antiretrovirals, anti-HIV treatment also includes a toxicity which pathophysiology is not completely elucidated. This nephrotoxicity is the consequence of organ accelerated ageing and of an increased vascular risk. Kidney vascularization (from renal arteries to capillaries) is essential to kidney function and all cardiovascular risks are also renal risks. It is now clearly established that combined antiretroviral treatment increases the vascular risk. A better comprehension of the links between HIV infection, its treatment and very long-term kidney risk is needed to improve the complex management of patients who have now cumulated several decades of HIV infection and treatment with various toxicities., (Copyright © 2017 Société francophone de néphrologie, dialyse et transplantation. Published by Elsevier Masson SAS. All rights reserved.)
- Published
- 2018
- Full Text
- View/download PDF
38. [Drug dosage adjustment in patients with renal impairment and evaluation of renal function: focus on the cardiologic patients].
- Author
-
Zimner-Rapuch S, Amet S, Janus N, Deray G, and Launay-Vacher V
- Subjects
- Drug Therapy, Humans, Kidney Function Tests, Pharmacokinetics, Heart Diseases complications, Heart Diseases physiopathology, Renal Insufficiency, Chronic complications, Renal Insufficiency, Chronic physiopathology
- Abstract
Chronic kidney disease is a progressive disease which has become a real public health issue. In patients with renal disease, drugs pharmacokinetics may be altered. The handling of drugs requires a special attention in these patients. Indeed, there is a risk of accumulation and drug overdose if dosage is not adjusted to the stage of renal insufficiency. Thus, to achieve a dosage adjustment knowing how to evaluate renal function is absolutely necessary. Different formulae are available including the Cockcroft and Gault formula aMDRD and CKD-EPI. In patients with cardiac issues, it appears that the CKD-EPI formula is that of choice in terms of clinical risk stratification. However, some summaries of product characteristics (SmPC) of drugs used in cardiology, such as Dabigatran(®), mention the need to use the Cockcroft-Gault, less accurate than aMDRD and CKD-EPI, in order to adjust the dose in patients with impaired renal function. Standardization of recommendations is necessary to limit disparities in dosage and drug exposure according to the formula. SmPCs however, are not the only source of information to obtain data on the use of drugs in the renal insufficient population. Some other information sources exist, reliable, updated and easily accessible., (Copyright © 2014 Elsevier Masson SAS. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
39. Prevalence of renal abnormalities in chronic HBV infection: the HARPE study.
- Author
-
Amet S, Bronowicki JP, Thabut D, Zoulim F, Bourliere M, Mathurin P, de Ledinghen V, Benhamou Y, Larrey DG, Janus N, Deray G, Launay-Vacher V, and Pol S
- Subjects
- Adult, Creatinine blood, Cross-Sectional Studies, Diabetes Mellitus epidemiology, Dyslipidemias epidemiology, Female, Humans, Hypertension epidemiology, Kidney Diseases pathology, Linear Models, Male, Middle Aged, Prevalence, Prospective Studies, Proteinuria blood, Biomarkers blood, Hepatitis B Surface Antigens blood, Hepatitis B, Chronic complications, Hepatitis B, Chronic epidemiology, Kidney Diseases epidemiology
- Abstract
Background & Aims: Few data are available on the prevalence of renal abnormalities in chronic hepatitis B virus (HBV)-infected patients. The multicentric cross-sectional HARPE study evaluated the prevalence of kidney disease indicators, in chronic HBV surface antigen carriers patients (HBsAg+) with active or inactive infection., Patients and Methods: Two hundred and sixty-eight HBsAg+ adult patients, naïve of any oral antihepatitis B virus treatment were prospectively included over 2 years. Data for renal assessment were collected once from patient files. Univariate tests and multiple linear regressions were performed with the SAS software, version 8.02 (SAS, Inc., Cary, NC, USA)., Results: Among the 260 patients analysed, 58% were men, the mean age was 42 ± 14 years, 59.6% were inactive carriers whereas 47 patients, mostly active, were about to start an antiviral therapy. Prevalence of proteinuria, haematuria, glycosuria, uninfectious leukocyturia was 38.1%, 20.6%, 3.9% and 9% respectively. According to the international definition, a total of 64.6% of patients were found to have kidney disease. Diabetes, hypertension and dyslipidaemia were observed, respectively, in 4.6%, 9.2% and 38.8% patients. There were no significant differences in these results within the three subgroups., Conclusion: Renal abnormalities are highly prevalent in our population and pre-exist before the initiation of any antihepatitis B virus treatment. This emphasizes the need for: (i) a baseline renal evaluation in all HBs antigen-positive patients; (ii) a regular renal monitoring before and during antihepatitis B virus treatment to diagnose and manage renal impairment and adjust antihepatitis B virus treatment doses to renal function when necessary., (© 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2015
- Full Text
- View/download PDF
40. Acute renal failure associated with the new BRAF inhibitor vemurafenib: a case series of 8 patients.
- Author
-
Launay-Vacher V, Zimner-Rapuch S, Poulalhon N, Fraisse T, Garrigue V, Gosselin M, Amet S, Janus N, and Deray G
- Subjects
- Acute Kidney Injury diagnosis, Acute Kidney Injury physiopathology, Adult, Aged, Aged, 80 and over, Antineoplastic Agents administration & dosage, Drug Administration Schedule, Female, Humans, Indoles administration & dosage, Kidney physiopathology, Kidney Function Tests, Male, Melanoma drug therapy, Middle Aged, Severity of Illness Index, Skin Neoplasms drug therapy, Sulfonamides administration & dosage, Treatment Failure, Treatment Outcome, Vemurafenib, Acute Kidney Injury chemically induced, Antineoplastic Agents adverse effects, Indoles adverse effects, Kidney drug effects, Proto-Oncogene Proteins B-raf antagonists & inhibitors, Sulfonamides adverse effects
- Abstract
Background: Vemurafenib is a BRAF inhibitor that has become the cornerstone of metastatic or inoperable melanoma therapy since its approval in 2011 in the United States and 2012 in Europe. This targeted therapy has shown impressive results in terms of increased progression-free and overall survival as compared to dacarbazine. The safety profile did not include any renal manifestations at that time., Methods: This report is the first case series of 8 patients who experienced significant to severe renal insufficiency under vemurafenib treatment., Results: This case series shows that vemurafenib may induce potentially severe acute renal failure, including renal sequelae and persistent kidney disease in some cases., Conclusions: Further studies are needed to investigate the effects of vemurafenib on the kidneys. Meanwhile, renal function should be closely monitored in treated patients for early detection of any renal dysfunction occurrence. Cancer 2014;120:2158-2163. © 2014 American Cancer Society., (© 2014 American Cancer Society.)
- Published
- 2014
- Full Text
- View/download PDF
41. Incidence of nephrogenic systemic fibrosis in patients undergoing dialysis after contrast-enhanced magnetic resonance imaging with gadolinium-based contrast agents: the Prospective Fibrose Nephrogénique Systémique study.
- Author
-
Amet S, Launay-Vacher V, Clément O, Frances C, Tricotel A, Stengel B, Gauvrit JY, Grenier N, Reinhardt G, Janus N, Choukroun G, Laville M, and Deray G
- Subjects
- Adult, Aged, Aged, 80 and over, Contrast Media adverse effects, Female, France, Humans, Incidence, Male, Middle Aged, Nephrogenic Fibrosing Dermopathy epidemiology, Renal Insufficiency, Chronic epidemiology, Renal Insufficiency, Chronic pathology, Risk Factors, Dialysis statistics & numerical data, Gadolinium adverse effects, Magnetic Resonance Imaging statistics & numerical data, Nephrogenic Fibrosing Dermopathy etiology, Renal Insufficiency, Chronic etiology
- Abstract
Background: Nephrogenic systemic fibrosis (NSF) has been related to the use of gadolinium-based contrast agents (GBCAs) in patients undergoing dialysis. The Prospective Fibrose Nephrogénique Systémique study, a French prospective study supported by the French drug regulatory agency (Agence Nationale de Sécurité du Médicament) and the French Societies of Nephrology, Dermatology, and Radiology, aimed at determining the incidence of NSF in patients undergoing long-term dialysis., Materials and Methods: Adult patients undergoing long-term dialysis receiving a magnetic resonance imaging (MRI) examination prescribed between January 15, 2009 and May 31, 2011, with or without GBCA were included. The methodology was based on a patient form intended to detect any dermatological event (DE) that may occur within 4 months after the examination. Further investigations were planned with their physicians if a DE was reported., Results: A total of 571 patients were included. A total of 50.3% received GBCA. Among them, 93.4% received a macrocyclic GBCA, usually gadoteric acid (88.9%). All in all, 22 patients (3.9%) reported a DE. Dermatological diagnoses did not reveal any evidence of NSF., Conclusions: The incidence of NSF after a single dose of a macrocyclic GBCA is null in our sample of 268 patients undergoing dialysis (hemodialysis and peritoneal dialysis). This incidence is just lower than 0.5%. When contrast-enhanced MRI can be essential, or even decisive, to the diagnosis, these results are important and reassuring if physicians need to perform contrast-enhanced MRI in patients undergoing dialysis.
- Published
- 2014
- Full Text
- View/download PDF
42. Administration of intravenous iron complexes on implantable central venous access port in cancer patients in France: the FERPAC survey.
- Author
-
Janus N, Scotte F, Rey JB, Amet S, Rouillon L, Zakin L, Mahi L, Deray G, and Launay-Vacher V
- Subjects
- Anemia, Iron-Deficiency etiology, Ferric Oxide, Saccharated, France, Humans, Infusions, Intravenous, Maltose administration & dosage, Neoplasms complications, Surveys and Questionnaires, Anemia, Iron-Deficiency drug therapy, Central Venous Catheters statistics & numerical data, Ferric Compounds administration & dosage, Glucaric Acid administration & dosage, Maltose analogs & derivatives, Neoplasms blood, Practice Patterns, Physicians'
- Abstract
Purpose: Implantable central venous access port (portacath) is used to provide long-term venous access and to deliver chemotherapy in cancer patients. Intravenous iron complexes are frequently prescribed in this setting, and some physicians use a portacath for their administration. The aim of this survey was to assess the frequency of this practice and the reasons supporting it., Methods: This declarative survey was conducted in France; 497 oncologists/hematologists were contacted to answer a survey on their practices regarding the administration of intravenous iron via a portacath., Results: A total of 141 recipients (29.5 %) completed the questionnaire. The intravenous iron complexes most frequently used were iron sucrose and ferric carboxymaltose, and 55.2 % of the responders reported using a portacath to administer intravenous iron complexes. The main reasons mentioned for this practice were ease of administration (27.9 %) and preservation of venous capital (27.6 %). The main reasons reported for not using a portacath to administer intravenous iron were a history of thrombosis (45.1 %) or potential drug interactions (17.7 %). Efficacy and safety were expected to be similar to those observed with peripheral administration. A 47.6 % of physicians declared that they usually did not observe adverse reactions after use of a portacath for iron administration. Intravenous iron administration was always planned after chemotherapy for 46.6 % of the responders and before chemotherapy for 38.2 %, whereas 15.3 % did not have any preference for either option., Conclusions: Intravenous iron complexes (mainly iron sucrose and ferric carboxymaltose) are commonly administered through a portacath in cancer patients in France. The choice for this route of administration is supported by clinical considerations, but further studies are needed to confirm the efficacy and safety of this practice.
- Published
- 2013
- Full Text
- View/download PDF
43. Malaria prophylaxis in patients with renal impairment: a review.
- Author
-
Amet S, Zimner-Rapuch S, Launay-Vacher V, Janus N, and Deray G
- Subjects
- Antimalarials pharmacokinetics, Drug Dosage Calculations, Drug Therapy, Combination, Humans, Malaria, Falciparum complications, Malaria, Falciparum prevention & control, Plasmodium falciparum, Travel, Antimalarials therapeutic use, Malaria, Falciparum drug therapy, Renal Insufficiency complications
- Abstract
Malaria is an endemic and potentially lethal disease transmitted by the protozoan parasite Plasmodium. It is currently endemic in more than 100 countries, which are visited by 125 million international travellers every year. For dialysis and renal insufficiency patients it becomes increasingly easier to travel to these countries thanks to the recent advances in renal replacement therapy. However, the pharmacokinetics of some prophylactic agents in malaria are altered, which may modify the effectiveness and safety of such treatments and the way they should be prescribed. Clinicians should be aware of these alterations which require subsequent dosage adjustments. This review provides recommendations on the use of antimalarial drugs, alone or in combination, in patients with renal impairment. These recommendations depend on the prevalence of Plasmodium falciparum chloroquine resistance, as defined by the WHO. Furthermore, fixed-dose combinations cannot be used in patients with creatinine clearance below 60 mL/min since the tablets available do not allow appropriate dosage adjustment for each drug. Chloroquine and proguanil require dosage adjustments, while atovaquone, doxycycline and mefloquine do not.
- Published
- 2013
- Full Text
- View/download PDF
44. Pulmonary hypertension: use of oral drugs in patients with renal insufficiency.
- Author
-
Zimner-Rapuch S, Amet S, Janus N, Deray G, and Launay-Vacher V
- Subjects
- Administration, Oral, Antihypertensive Agents adverse effects, Antihypertensive Agents pharmacokinetics, Drug Dosage Calculations, Humans, Hypertension, Pulmonary complications, Hypertension, Pulmonary metabolism, Hypertension, Pulmonary physiopathology, Kidney metabolism, Renal Insufficiency metabolism, Renal Insufficiency physiopathology, Treatment Outcome, Antihypertensive Agents administration & dosage, Blood Pressure drug effects, Hypertension, Pulmonary drug therapy, Kidney physiopathology, Renal Insufficiency complications
- Abstract
Pulmonary hypertension (PH) is a progressive, fatal pulmonary circulatory disease that is characterized by elevated pulmonary arterial pressure and secondary right ventricular failure. PH has been reported to be highly prevalent in patients with chronic kidney disease, and especially among end-stage renal disease patients undergoing haemodialysis. However, only few data are available on drug dosage adjustment to renal function for those drugs that are commonly used in the treatment of PH. We reviewed the literature and gathered information, although sparse, to propose guidelines for using these drugs in renal insufficiency patients.
- Published
- 2013
- Full Text
- View/download PDF
45. [Letter on the article: "Kidney and HIV infection"].
- Author
-
Zimner-Rapuch S, Janus N, Amet S, Deray G, and Launay-Vacher V
- Subjects
- Female, Humans, Male, AIDS-Associated Nephropathy
- Published
- 2012
- Full Text
- View/download PDF
46. [How to adjust the dose of drugs in chronic kidney disease?].
- Author
-
Launay-Vacher V, Janus N, Zimner-Rapuch S, Amet S, and Deray G
- Subjects
- Chronic Disease, Dose-Response Relationship, Drug, Glomerular Filtration Rate, Humans, Pharmacokinetics, Kidney Diseases complications, Pharmaceutical Preparations administration & dosage
- Abstract
Renal insufficiency is a common disease, in the general population as well as in some specific diseases such as HIV infection or cancer. The vast majority of medicines require a dosage adjustment in case of renal dysfunction, it is thus of a crucial importance to know how to evaluate appropriately renal function, on one hand, but also to have access to reliable information sources on how to handle the drugs in such cases. Most often, the Summary of Drug Characteristics (SmPC) only provides partial information, which may even be false in some cases as compared to the most recent data from the literature. However, some information sources exist, reliable, updated, and easily accessible.
- Published
- 2012
47. [Renal toxicity of contrast agents in oncologic patients].
- Author
-
Amet S and Deray G
- Subjects
- Acute Kidney Injury complications, Acute Kidney Injury prevention & control, Contrast Media chemistry, Contrast Media pharmacokinetics, Diabetes Complications, Gadolinium adverse effects, Gadolinium pharmacokinetics, Glomerular Filtration Rate physiology, Glomerular Filtration Rate radiation effects, Humans, Iodine Radioisotopes adverse effects, Magnetic Resonance Imaging, Osmolar Concentration, Practice Guidelines as Topic, Risk Assessment, Structure-Activity Relationship, Acute Kidney Injury chemically induced, Contrast Media adverse effects, Nephrogenic Fibrosing Dermopathy chemically induced
- Abstract
Cancer patients frequently undergo imaging examinations to diagnosis but also to evaluate their responses to treatment. These patients are also at high risk of kidney impairment before considering the possible nephrotoxicity of their chemotherapy. In this context, it is overriding to know contrast agents induced risks and what are the good practices to avoid them. Renal function evaluation takes a major part in there. The X-ray radiology using iodinated contrast agent (ICA) exposes patients to acute renal failure. This induced nephropathy is prevented by adequate hydration prior to injection when the glomerular filtration rate (GFR) of the patient is less than 60 ml/min/1.73 m(2). For hardly nephrotoxic, gadolinium-based contrast agents (GBCA) injected in magnetic resonance imaging, were considered for a long as a safe alternative to ICA. Yet they may induce nephrogenic systemic fibrosis (NSF). The recommendations of European and U.S. drugs safety agencies have recently converged defining groups at risk of NSF based on the level of patients GFR and the type of GBCA used. How to assess the risk-benefit balance of the cancer patient for whom you should choose an informative, effective and safe imaging examination?
- Published
- 2012
- Full Text
- View/download PDF
48. [aMDRD formula is the method of choice for estimating the glomerular filtration rate, even in the "very old": comment on the article by Andro et al].
- Author
-
Launay-Vacher V, Zimner-Rapuch S, Amet S, Janus N, and Deray G
- Subjects
- Humans, Kidney Diseases diet therapy, Geriatrics methods, Kidney Diseases diagnosis, Kidney Function Tests methods
- Published
- 2011
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.