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948 results on '"Dupont, Christophe"'

1. Dynamics on Markov surfaces: classification of stationary measures

Author

Cantat, Serge, Dupont, Christophe, and Martin-Baillon, Florestan

Subjects
Mathematics - Dynamical Systems
Abstract

Consider the four punctured sphere ${\mathbb{S}}_4^2$. Each choice of four traces, one for each puncture, determines a relative character variety for the representations of the fundamental group of ${\mathbb{S}}_4^2$ in ${\sf{SL}}_2(\mathbb{C})$. We classify the stationary probability measures for the action of the mapping class group ${\sf{Mod}}({\mathbb{S}}_4^2)$ on these character varieties.

Published
2024

2. On slice measures of Green currents on CP(2)

Author

Dupont, Christophe and Tapiero, Virgile

Subjects
Mathematics - Complex Variables, Mathematics - Dynamical Systems
Abstract

Let $f$ be a holomorphic map of $\mathbb{C}\mathbb{P}^2$ of degree $d\geq 2$, let $T$ be its Green current and $\mu=T\wedge T$ be its equilibrium measure. We give a new proof of a theorem due to Dujardin asserting that $\mu \ll T\wedge\omega_{\mathbb{P}^2}$ implies $\lambda_2=\frac{1}{2} \log\ d$, where $\lambda_1 \geq \lambda_2$ are the Lyapunov exponents of $\mu$. Then, assuming $\mu\ll T\wedge\omega_{\mathbb{P}^2}$, we study slice measures $\nu :=T\wedge dd^c|W|^2$, where $W$ is a holomorphic local submersion. We give sufficient conditions on the Radon-Nikodym derivative of $\mu$ with respect to the trace measure $T\wedge\omega_{\mathbb{P}^2}$ ensuring $\mu=\nu$. The involved submersion $W$ comes from normal coordinates for the inverse branches of the iterates of $f$., Comment: To appear in the proceedings of the Simons Symposia on Algebraic, Complex, and Arithmetic Dynamics

Published
2023

5. Convexity of complements of limit sets for holomorphic foliations on surfaces

Author

Deroin, Bertrand, Dupont, Christophe, and Kleptsyn, Victor

Subjects
Mathematics - Complex Variables, Mathematics - Dynamical Systems
Abstract

Let $\mathcal F$ be a holomorphic foliation on a compact K\'ahler surface with hyperbolic singularities and no foliation cycle. We prove that if the limit set of $\mathcal F$ has zero Lebesgue measure, then its complement is a modification of a Stein domain. The proof consists in building, in several steps, a metric of positive curvature for the normal bundle of $\mathcal F$ near the limit set. Then we construct a proper strictly plurisubharmonic exhaustion function for the complement of the limit set, by adapting Brunella's ideas to our singular context. The arguments hold more generally when the limit set is thin, a property relying on Brownian motion.

Published
2022

6. World Allergy Organization (WAO) Diagnosis and Rationale for Action against Cow's Milk Allergy (DRACMA) guideline update – XI – Milk supplement/replacement formulas for infants and toddlers with CMA – Systematic review

Author

Bognanni, Antonio, Firmino, Ramon T., Arasi, Stefania, Chu, Derek K., Chu, Alexandro W.L., Waffenschmidt, Siw, Agarwal, Arnav, Dziechciarz, Piotr, Horvath, Andrea, Mihara, Hanako, Roldan, Yetiani, Terracciano, Luigi, Martelli, Alberto, Starok, Anna, Said, Maria, Shamir, Raanan, Ansotegui, Ignacio J., Dahdah, Lamia, Ebisawa, Motohiro, Galli, Elena, Kamenwa, Rose, Lack, Gideon, Li, Haiqi, Pawankar, Ruby, Warner, Amena, Wong, Gary Wing Kin, Bozzola, Martin, Assa'Ad, Amal, Dupont, Christophe, Bahna, Sami, Spergel, Jonathan, Venter, Carina, Szajewska, Hania, Nowak-Wegrzyn, Anna H., Vandenplas, Yvan, Papadopoulos, Nikolaos G., Waserman, Susan, Fiocchi, Alessandro, Schünemann, Holger J., and Brożek, Jan L.

Published
2024
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7. World Allergy Organization (WAO) Diagnosis and Rationale for Action against Cow's Milk Allergy (DRACMA) guidelines update – XVI - Nutritional management of cow's milk allergy

Author

Ansotegui, Ignacio, Arasi, Stefania, Bahna, Sami L., Canani, Roberto Berni, Bozzola, Martin, Brozek, Jan, Chu, Derek, Dahdah, Lamia, Dupont, Christophe, Ebisawa, Motohiro, Firmino, Ramon T., Galli, Elena, Lack, Gideon, Li, Haiqi, Martelli, Alberto, Papadopoulos, Nikolas G., Said, Maria, Sánchez-Borges, Mario, Schunemann, Holger, Shamir, Raanan, Spergel, Jonathan, Szajewska, Hania, Terracciano, Luigi, Vandenplas, Yvan, Waserman, Susan, Warner, Amena, Wong, Gary W.K., Venter, Carina, Meyer, Rosan, Groetch, Marion, Nowak-Wegrzyn, Anna, Mennini, Maurizio, Pawankar, Ruby, Kamenwa, Rose, Assa'ad, Amal, Amara, Shriya, Fiocchi, Alessandro, and Bognanni, Antonio

Published
2024
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8. World Allergy Organization (WAO) Diagnosis and Rationale for Action against Cow's Milk Allergy (DRACMA) guideline update – XII – Recommendations on milk formula supplements with and without probiotics for infants and toddlers with CMA

Author

Bognanni, Antonio, Fiocchi, Alessandro, Arasi, Stefania, Chu, Derek K., Ansotegui, Ignacio, Assa'ad, Amal H., Bahna, Sami L., Berni Canani, Roberto, Bozzola, Martin, Dahdah, Lamia, Dupont, Christophe, Dziechciarz, Piotr, Ebisawa, Motohiro, Firmino, Ramon T., Chu, Alexandro, Galli, Elena, Horvath, Andrea, Kamenwa, Rose, Lack, Gideon, Li, Haiqi, Martelli, Alberto, Nowak-Węgrzyn, Anna, Papadopoulos, Nikolaos G., Pawankar, Ruby, Roldan, Yetiani, Said, Maria, Sánchez-Borges, Mario, Shamir, Raanan, Spergel, Jonathan M., Szajewska, Hania, Terracciano, Luigi, Vandenplas, Yvan, Venter, Carina, Waffenschmidt, Siw, Waserman, Susan, Warner, Amena, Wong, Gary W.K., Schünemann, Holger J., and Brozek, Jan L.

Published
2024
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9. World Allergy Organization (WAO) Diagnosis and Rationale for Action against Cow's Milk Allergy (DRACMA) guidelines update – X – Breastfeeding a baby with cow's milk allergy

Author

Ansotegui, Ignacio, Arasi, Stefania, Assa'ad, Amal H., Bahna, Sami L., Canani, Roberto Berni, Bognanni, Antonio, Bozzola, Martin, Brozek, Jan, Chu, Derek, Dahdah, Lamia, Dupont, Christophe, Dziechciarz, Piotr, Ebisawa, Motohiro, Firmino, Ramon T., Fiocchi, Alessandro, Galli, Elena, Kamenwa, Rose, Lack, Gideon, Li, Haiqi, Martelli, Alberto, Nowak-Węgrzyn, Anna, Papadopoulos, Nikolas G., Pawankar, Ruby, Said, Maria, Sánchez-Borges, Mario, Schunemann, Holger, Shamir, Raanan, Spergel, Jonathan, Szajewska, Hania, Terracciano, Luigi, Vandenplas, Yvan, Waserman, Susan, Venter, Carina, Warner, Amena, Wong, Gary W.K., McWilliam, Vicki, Netting, Merryn J., Volders, Evelyn, and Palmer, Debra J.

Published
2023
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10. Cow's milk-based infant formula supplements in breastfed infants and primary prevention of cow's milk allergy: A commentary of the Committee on Nutrition of the French Society of Pediatrics

Author

Dupont, Christophe, Bocquet, Alain, Brancato, Sandra, Chalumeau, Martin, Darmaun, Dominique, de Luca, Arnaud, Feillet, François, Frelut, Marie-Laure, Guimber, Dominique, Lapillonne, Alexandre, Linglart, Agnès, Peretti, Noel, Roze, Jean-Christophe, Siméoni, Umberto, Turck, Dominique, and Chouraqui, Jean-Pierre

Published
2023
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12. Dynamics of fibered endomorphisms of $\mathbb P^k$

Author

Dupont, Christophe and Taflin, Johan

Subjects
Mathematics - Complex Variables, Mathematics - Dynamical Systems
Abstract

We study the structure and the Lyapunov exponents of the equilibrium measure of endomorphisms of $\mathbb P^k$ preserving a fibration. We extend the decomposition of the equilibrium measure obtained by Jonsson for polynomial skew products of $\mathbb C^2$. We also show that the sum of the sectional exponents satisfies a Bedford-Jonsson formula when the fibration is linear, and that this function is plurisubharmonic on families of fibered endomorphisms. In particular, the sectional part of the bifurcation current is a closed positive current on the parameter space.

Published
2018

14. International Consensus Recommendations for Eosinophilic Gastrointestinal Disease Nomenclature

Author

Dellon, Evan S., Gonsalves, Nirmala, Abonia, J. Pablo, Alexander, Jeffrey A., Arva, Nicoleta C., Atkins, Dan, Attwood, Stephen E., Auth, Marcus K.H., Bailey, Dominique D., Biederman, Luc, Blanchard, Carine, Bonis, Peter A., Bose, Paroma, Bredenoord, Albert J., Chang, Joy W., Chehade, Mirna, Collins, Margaret H., Di Lorenzo, Carlo, Dias, Jorge Amil, Dohil, Ranjan, Dupont, Christophe, Falk, Gary W., Ferreira, Cristina T., Fox, Adam T., Genta, Robert M., Greuter, Thomas, Gupta, Sandeep K., Hirano, Ikuo, Hiremath, Girish S., Horsley-Silva, Jennifer L., Ishihara, Shunji, Ishimura, Norihisa, Jensen, Elizabeth T., Gutiérrez-Junquera, Carolina, Katzka, David A., Khoury, Paneez, Kinoshita, Yoshikazu, Kliewer, Kara L., Koletzko, Sibylle, Leung, John, Liacouras, Chris A., Lucendo, Alfredo J., Martin, Lisa J., McGowan, Emily C., Menard-Katcher, Calies, Metz, David C., Miller, Talya L., Moawad, Fouad J., Muir, Amanda B., Mukkada, Vincent A., Murch, Simon, Nhu, Quan M., Nomura, Ichiro, Nurko, Samuel, Ohtsuka, Yoshikazu, Oliva, Salvatore, Orel, Rok, Papadopoulou, Alexandra, Patel, Dhyanesh A., Pesek, Robert D., Peterson, Kathryn A., Philpott, Hamish, Putnam, Philip E., Richter, Joel E., Rosen, Rachel, Ruffner, Melanie A., Safroneeva, Ekaterina, Schreiner, Philipp, Schoepfer, Alain, Schroeder, Shauna R., Shah, Neil, Souza, Rhonda F., Spechler, Stuart J., Spergel, Jonathan M., Straumann, Alex, Talley, Nicholas J., Thapar, Nikhil, Vandenplas, Yvan, Venkatesh, Rajitha D., Vieira, Mario C., von Arnim, Ulrike, Walker, Marjorie M., Wechsler, Joshua B., Wershil, Barry K., Wright, Benjamin L., Yamada, Yoshiyuki, Yang, Guang-Yu, Zevit, Noam, Rothenberg, Marc E., Furuta, Glenn T., and Aceves, Seema S.

Published
2022
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15. World Allergy Organization (WAO) Diagnosis and Rationale for Action against Cow's Milk Allergy (DRACMA) guideline update – XIII – Oral immunotherapy for CMA – Systematic review

Author

Ansotegui, Ignacio J., Arasi, Stefania, Assa'ad, Amal H., Bahna, Sami L., Canani, Roberto Berni, Bognanni, Antonio, Bozzola, Martin, Brozek, Jan, Chu, Derek K., Dahdah, Lamia, Dupont, Christophe, Ebisawa, Motohiro, Fiocchi, Alessandro, Firmino, Ramon Targino, Galli, Elena, Kamenwa, Rose, Lack, Gideon, Li, Haiqi, Martelli, Alberto, Nowak-Wegrzyn, Anna H., Papadopoulos, Nikolaos G., Pawankar, Ruby, Said, Maria, Sánchez-Borges, Mario, Schünemann, Holger J., Shamir, Raanan, Spergel, Jonathan M., Szajewska, Hania, Terracciano, Luigi, Vandenplas, Yvan, Venter, Carina, Warner, Amena, Waserman, Susan, Wong, GaryW.K., Firmino, Ramon T., Waffenschmidt, Siw, Agarwal, Arnav, Dziechciarz, Piotr, Horvath, Andrea, Jebai, Rime, Mihara, Hanako, Roldan, Yetiani, Bahna, Sami, and Brożek, Jan L.

Published
2022
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16. A distortion theorem for the iterated inverse branches of a holomorphic endomorphism of CP(k)

Author

Berteloot, Francois and Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, Mathematics - Complex Variables
Abstract

We linearize the inverse branches of the iterates of holomorphic endomorphisms of CP(k) and thus overcome the lack of Koebe distortion theorem in this setting when k $\ge$ 2. We review several applications of this result in holomorphic dynamics.

Published
2017

17. Directional dimensions of ergodic currents on $\mathbb C \mathbb P (2)$

Author

Dupont, Christophe and Rogue, Axel

Subjects
Mathematics - Dynamical Systems, Mathematics - Complex Variables
Abstract

LLet $f$ be a holomorphic endomorphism of $\mathbb P^ 2$ of degree $d \geq 2$. We estimate the local directional dimensions of closed positive currents $S$ with respect to ergodic dilating measures $\nu$. We infer several applications. The first one shows that the currents $S$ containing a measure of entropy $h\_\nu > \log d$ have a directional dimension $>2$, which answers a question by de Th\'elin-Vigny. The second application asserts that the Dujardin's semi-extremal endomorphisms are close to suspensions of one-dimensional Latt\`es maps. Finally, we obtain an upper bound for the dimension of the equilibrium measure, towards the formula conjectured by Binder-DeMarco.

Published
2017

18. World Allergy Organization (WAO) Diagnosis and Rationale for Action against Cow’s Milk Allergy (DRACMA) Guideline update – XIV – Recommendations on CMA immunotherapy

Author

Brozek, Jan L., Firmino, Ramon T., Bognanni, Antonio, Arasi, Stefania, Ansotegui, Ignacio, Assa'ad, Amal H., Bahna, Sami L., Canani, Roberto Berni, Bozzola, Martin, Chu, Derek K., Dahdah, Lamia, Dupont, Christophe, Dziechciarz, Piotr, Ebisawa, Motohiro, Galli, Elena, Horvath, Andrea, Kamenwa, Rose, Lack, Gideon, Li, Haiqi, Martelli, Alberto, Nowak-Węgrzyn, Anna, Papadopoulos, Nikolaos G., Pawankar, Ruby, Roldan, Yetiani, Said, Maria, Sánchez-Borges, Mario, Shamir, Raanan, Spergel, Jonathan M., Szajewska, Hania, Terracciano, Luigi, Vandenplas, Yvan, Venter, Carina, Waffenschmidt, Siw, Waserman, Susan, Warner, Amena, Wong, Gary W.K., Fiocchi, Alessandro, and Schünemann, Holger J.

Published
2022
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19. Updated International Consensus Diagnostic Criteria for Eosinophilic Esophagitis: Proceedings of the AGREE Conference.

Author

Dellon, Evan, Liacouras, Chris, Molina-Infante, Javier, Furuta, Glenn, Spergel, Jonathan, Zevit, Noam, Spechler, Stuart, Attwood, Stephen, Straumann, Alex, Alexander, Jeffrey, Atkins, Dan, Arva, Nicoleta, Blanchard, Carine, Bonis, Peter, Book, Wendy, Capocelli, Kelley, Chehade, Mirna, Cheng, Edaire, Collins, Margaret, Davis, Carla, Dias, Jorge, Di Lorenzo, Carlo, Dohil, Ranjan, Dupont, Christophe, Falk, Gary, Ferreira, Cristina, Fox, Adam, Gonsalves, Nirmala, Gupta, Sandeep, Katzka, David, Kinoshita, Yoshikazu, Menard-Katcher, Calies, Kodroff, Ellyn, Metz, David, Miehlke, Stephan, Muir, Amanda, Mukkada, Vincent, Murch, Simon, Nurko, Samuel, Ohtsuka, Yoshikazu, Orel, Rok, Papadopoulou, Alexandra, Peterson, Kathryn, Philpott, Hamish, Putnam, Philip, Richter, Joel, Rosen, Rachel, Rothenberg, Marc, Schoepfer, Alain, Scott, Melissa, Shah, Neil, Sheikh, Javed, Souza, Rhonda, Strobel, Mary, Talley, Nicholas, Vaezi, Michael, Vandenplas, Yvan, Vieira, Mario, Walker, Marjorie, Wechsler, Joshua, Wershil, Barry, Wen, Ting, Yang, Guang-Yu, Hirano, Ikuo, Bredenoord, Albert, and Aceves, Seema

Subjects
Diagnosis, Eosinophilic Esophagitis, Esophageal Eosinophilia, Proton Pump Inhibitor, Algorithms, Consensus, Diagnostic Techniques, Digestive System, Eosinophilic Esophagitis, Gastroenterology, Humans, Predictive Value of Tests, Prognosis, Proton Pump Inhibitors
Abstract

BACKGROUND & AIMS: Over the last decade, clinical experiences and research studies raised concerns regarding use of proton pump inhibitors (PPIs) as part of the diagnostic strategy for eosinophilic esophagitis (EoE). We aimed to clarify the use of PPIs in the evaluation and treatment of children and adults with suspected EoE to develop updated international consensus criteria for EoE diagnosis. METHODS: A consensus conference was convened to address the issue of PPI use for esophageal eosinophilia using a process consistent with standards described in the Appraisal of Guidelines for Research and Evaluation II. Pediatric and adult physicians and researchers from gastroenterology, allergy, and pathology subspecialties representing 14 countries used online communications, teleconferences, and a face-to-face meeting to review the literature and clinical experiences. RESULTS: Substantial evidence documented that PPIs reduce esophageal eosinophilia in children, adolescents, and adults, with several mechanisms potentially explaining the treatment effect. Based on these findings, an updated diagnostic algorithm for EoE was developed, with removal of the PPI trial requirement. CONCLUSIONS: EoE should be diagnosed when there are symptoms of esophageal dysfunction and at least 15 eosinophils per high-power field (or approximately 60 eosinophils per mm2) on esophageal biopsy and after a comprehensive assessment of non-EoE disorders that could cause or potentially contribute to esophageal eosinophilia. The evidence suggests that PPIs are better classified as a treatment for esophageal eosinophilia that may be due to EoE than as a diagnostic criterion, and we have developed updated consensus criteria for EoE that reflect this change.

Published
2018

20. Nutri-Score: Its Benefits and Limitations in Children’s Feeding

Author

Chouraqui, Jean-Pierre, Dupont, Christophe, Briend, André, Darmaun, Dominique, Peretti, Noel, Bocquet, Alain, Chalumeau, Martin, De Luca, Arnaud, Feillet, François, Frelut, Marie-Laure, Guimber, Dominique, Lapillonne, Alexandre, Linglart, Agnès, Rozé, Jean-Christophe, Simeoni, Umberto, and Turck, Dominique

Published
2023
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23. Goat Milk Allergy and a Potential Role for Goat Milk in Cow's Milk Allergy.

Author

Benjamin-van Aalst, Olga, Dupont, Christophe, van der Zee, Lucie, Garssen, Johan, and Knipping, Karen

Abstract

In many parts of the world, goat milk has been part of the human diet for millennia. Allergy to goat's milk, not associated with allergy to cow's milk, is a rare disorder, although some cases have been described. Goat milk proteins have substantial homology with cow's milk proteins and even show cross-reactivity; therefore, they are not advised as an alternative to cow's milk for infants with IgE-mediated cow's milk allergies. However, there are indications that, due to the composition of the goat milk proteins, goat milk proteins show lower allergenicity than cow's milk due to a lower αS1-casein content. For this reason, goat milk might be a better choice over cow's milk as a first source of protein when breastfeeding is not possible or after the breastfeeding period. Additionally, some studies show that goat milk could play a role in specific types of non-IgE-mediated cow milk allergy or even in the prevention of sensitization to cow's milk proteins. This review discusses a possible role of goat milk in non-IgE mediated allergy and the prevention or oral tolerance induction of milk allergy. [ABSTRACT FROM AUTHOR]

Published
2024
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24. Feeding difficulties in children with food allergies: An EAACI Task Force Report

Author

Hill, Sarah‐Anne, primary, Nurmatov, Ulugbek, additional, DunnGalvin, Audrey, additional, Reese, Imke, additional, Vieira, Mario C., additional, Rommel, Natalie, additional, Dupont, Christophe, additional, Venter, Carina, additional, Cianferoni, Antonella, additional, Walsh, Joanne, additional, Yonamine, Glauce, additional, Beauregard, Alexia, additional, Meyer, Rosan, additional, and Vazquez‐Ortiz, Marta, additional

Published
2024
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25. Compléments de préparations pour nourrisson à base de lait de vache chez les nourrissons allaités au sein et prévention primaire de l’allergie aux protéines du lait de vache : avis du Comité de nutrition de la Société française de pédiatrie

Author

Bocquet, Alain, primary, Dupont, Christophe, additional, Brancato, Sandra, additional, Briend, André, additional, Chalumeau, Martin, additional, Darmaun, Dominique, additional, de Luca, Arnaud, additional, Feillet, François, additional, Frelut, Marie-Laure, additional, Guimber, Dominique, additional, Lapillonne, Alexandre, additional, Linglart, Agnès, additional, Peretti, Noel, additional, Roze, Jean-Christophe, additional, Simeoni, Umberto, additional, Turck, Dominique, additional, and Chouraqui, Jean-Pierre, additional

Published
2024
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28. Automorphisms of surfaces: Kummer rigidity and measure of maximal entropy

Author

Cantat, Serge and Dupont, Christophe

Subjects
Mathematics - Dynamical Systems
Abstract

We classify complex projective surfaces with an automorphism of positive entropy for which the unique invariant measure of maximal entropy is absolutely continuous with respect to Lebesgue measure., Comment: 57 pages, 1 figure

Published
2014

29. Dynamical stability and Lyapunov exponents for holomorphic endomorphisms of CP(k)

Author

Berteloot, François, Bianchi, Fabrizio, and Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, Mathematics - Complex Variables
Abstract

We introduce a notion of stability for equilibrium measures in holomorphic families of endomorphisms of CP(k) and prove that it is equivalent to the stability of repelling cycles and equivalent to the existence of some measurable holomorphic motion of Julia sets which we call equilibrium lamination. We characterize the corresponding bifurcations by the strict subharmonicity of the sum of Lyapunov exponents or the instability of critical dynamics and analyze how repelling cycles may bifurcate. Our methods deeply exploit the properties of Lyapunov exponents and are based on ergodic theory and on pluripotential theory., Comment: 43 pages, to appear in Ann. Sci. Ecole Norm. Sup

Published
2014

30. Diagnosis and management of food allergy-induced constipation in young children-An EAACI position paper

Author

Meyer, Rosan, Vandenplas, Yvan, Lozinsky, Adriana Chebar, Vieira, Mario C., Berni Canani, Roberto, du Toit, George, Dupont, Christophe, Giovannini, Mattia, Uysal, Pinar, Cavkaytar, Ozlem, Knibb, Rebecca, Fleischer, David M., Nowak-Wegrzyn, Anna, Venter, Carina, Meyer, Rosan, Vandenplas, Yvan, Lozinsky, Adriana Chebar, Vieira, Mario C., Berni Canani, Roberto, du Toit, George, Dupont, Christophe, Giovannini, Mattia, Uysal, Pinar, Cavkaytar, Ozlem, Knibb, Rebecca, Fleischer, David M., Nowak-Wegrzyn, Anna, and Venter, Carina

Abstract

The recognition of constipation as a possible non-Immunoglobulin E (IgE)-mediated allergic condition is challenging because functional constipation (unrelated to food allergies) is a common health problem with a reported worldwide prevalence rate of up to 32.2% in children. However, many studies in children report challenge proven cow's milk allergy and constipation as a primary symptom and have found that between 28% and 78% of children improve on a cow's milk elimination diet. Due to the paucity of data and a focus on IgE-mediated allergy, not all food allergy guidelines list constipation as a symptom of food allergy. Yet, it is included in all cow's milk allergy guidelines available in English language. The Exploring Non-IgE-Mediated Allergy (ENIGMA) Task Force (TF) of the European Academy for Allergy and Clinical Immunology (EAACI) considers in this paper constipation in the context of failure of standard treatment and discuss the role of food allergens as culprit in constipation in children. This position paper used the Delphi approach in reaching consensus on both diagnosis and management, as currently published data are insufficient to support a systematic review.

Published
2024

32. Topology and dynamics of Levi-flats in surfaces of general type

Author

Deroin, Bertrand and Dupont, Christophe

Subjects
Mathematics - Complex Variables, Mathematics - Dynamical Systems, Mathematics - Geometric Topology, 37F75, 32V40, 37A50, 57R30, 14J29
Abstract

We focus on the topology and dynamics of minimal sets and Levi-flats in surfaces of general type. Our method relies on the ergodic theory of Riemann surfaces laminations: we use harmonic measures and Lyapunov exponents. Our first result establishes that minimal sets have large Hausdorff dimension when a leaf is simply connected. Our second result shows that the class of Anosov Levi-flats does not occur in surfaces of general type. In particular, by using rigidity results, we obtain that Levi-flats are not virtually diffeomorphic to unitary tangent bundles of hyperbolic compact surfaces, nor to hyperbolic torus bundles., Comment: 29 pages

Published
2012

33. Large entropy measures for endomorphisms of CP(k)

Author

Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, Mathematics - Complex Variables, 37C40, 37F10
Abstract

Let $f$ be an holomorphic endomorphism of $\mathbb{C}\mathbb{P}^k$. We construct by using coding techniques a class of ergodic measures as limits of non-uniform probability measures on preimages of points. We show that they have large metric entropy, close to $\log d^k$. We establish for them strong stochastic properties and prove the positivity of their Lyapunov exponents. Since they have large entropy, those measures are supported in the support of the maximal entropy measure of $f$. They in particular provide lower bounds for the Hausdorff dimension of the Julia set., Comment: 24 pages

Published
2009

34. Lactobacillus reuteri DSM 17938 for managing infant colic: protocol for an individual participant data meta-analysis.

Author

Sung, Valerie, Cabana, Michael D, D'Amico, Frank, Deshpande, Girish, Dupont, Christophe, Indrio, Flavia, Mentula, Silja, Partty, Anna, Savino, Francesco, Szajewska, Hania, and Tancredi, Daniel

Subjects
Humans, Colic, Treatment Outcome, Probiotics, Infant, Lactobacillus reuteri, COMPLEMENTARY MEDICINE, NUTRITION & DIETETICS, PERINATOLOGY, Clinical Sciences, Public Health and Health Services, Other Medical and Health Sciences
Abstract

IntroductionInfant colic, or excessive crying of unknown cause in infants less than 3 months old, is common and burdensome. Its aetiology is undetermined, and consensus on its management is still lacking. Recent studies suggest a possible link between infant colic and gut microbiota, indicating probiotics to be a promising treatment. However, only a few strains have been tested, and results from randomised controlled trials are conflicting. It is important to clarify whether probiotics are effective for treating infant colic in general, and to identify whether certain subgroups of infants with colic would benefit from particular strains of probiotics.Methods and analysisThrough an individual participant data meta-analysis (IPDMA), we aim to identify whether the probiotic Lactobacillus reuteri DSM 17938 is effective in the management of infant colic, and to clarify whether its effects differ according to feeding method (breast vs formula vs combined), proton pump inhibitor exposure, and antibiotic exposure. The primary outcomes are infant crying duration and treatment success (at least 50% reduction in crying time from baseline) at 21 days postintervention. Individual participant data from all studies will be modelled simultaneously in multilevel generalised linear mixed-effects regression models to account for the nesting of participants within studies. Subgroup analyses of participant-level and intervention-level characteristics will be undertaken on the primary outcomes to assess if the intervention effect differs between certain groups of infants.Ethics and disseminationApproved by the Royal Children's Hospital Human Research Ethics Committee (HREC 34081). Results will be reported in a peer-reviewed journal in 2015.Trial registration numberPROSPERO CRD42014013210.

Published
2014

35. Cow’s Milk-related Symptom Score (CoMiSS) values in presumed healthy European infants aged 6–12 months: a cross-sectional study

Author

Jankiewicz, Mateusz, primary, Ahmed, Fatme, additional, Bajerova, Katerina, additional, Carvajal Roca, Maria Eva, additional, Dupont, Christophe, additional, Huysentruyt, Koen, additional, Kuitunen, Mikael, additional, Meyer, Rosan, additional, Pancheva, Rouzha, additional, Koninckx, Carmen Ribes, additional, Salvatore, Silvia, additional, Shamir, Raanan, additional, Staiano, Annamaria, additional, Vandenplas, Yvan, additional, and Szajewska, Hania, additional

Published
2023
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36. World Allergy Organization (WAO) Diagnosis and Rationale for Action against Cow's Milk Allergy (DRACMA) guidelines update – X – Breastfeeding a baby with cow's milk allergy

Author

McWilliam, Vicki, primary, Netting, Merryn J., additional, Volders, Evelyn, additional, Palmer, Debra J., additional, Ansotegui, Ignacio, additional, Arasi, Stefania, additional, Assa'ad, Amal H., additional, Bahna, Sami L., additional, Canani, Roberto Berni, additional, Bognanni, Antonio, additional, Bozzola, Martin, additional, Brozek, Jan, additional, Chu, Derek, additional, Dahdah, Lamia, additional, Dupont, Christophe, additional, Dziechciarz, Piotr, additional, Ebisawa, Motohiro, additional, Firmino, Ramon T., additional, Fiocchi, Alessandro, additional, Galli, Elena, additional, Kamenwa, Rose, additional, Lack, Gideon, additional, Li, Haiqi, additional, Martelli, Alberto, additional, Nowak-Węgrzyn, Anna, additional, Papadopoulos, Nikolas G., additional, Pawankar, Ruby, additional, Said, Maria, additional, Sánchez-Borges, Mario, additional, Schunemann, Holger, additional, Shamir, Raanan, additional, Spergel, Jonathan, additional, Szajewska, Hania, additional, Terracciano, Luigi, additional, Vandenplas, Yvan, additional, Waserman, Susan, additional, Venter, Carina, additional, Warner, Amena, additional, and Wong, Gary W.K., additional

Published
2023
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37. On the dimension of invariant measures of endomorphisms of $\mathbb{CP}^k$

Author

Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, Mathematics - Complex Variables, 37C45, 37F10
Abstract

Let $f$ be an endomorphism of $\mathbb{CP}^k$ and $\nu$ be an $f$-invariant measure with positive Lyapunov exponents $(\lambda_1,\...,\lambda_k)$. We prove a lower bound for the pointwise dimension of $\nu$ in terms of the degree of $f$, the exponents of $\nu$ and the entropy of $\nu$. In particular our result can be applied for the maximal entropy measure $\mu$. When $k=2$, it implies that the Hausdorff dimension of $\mu$ is estimated by $\dim_{\cal H} \mu \geq {\log d \over \lambda_1} + {\log d \over \lambda_2}$, which is half of the conjectured formula. Our method for proving these results consists in studying the distribution of the $\nu$-generic inverse branches of $f^n$ in $\mathbb{CP}^k$. Our tools are a volume growth estimate for the bounded holomorphic polydiscs in $\mathbb{CP}^k$ and a normalization theorem for the $\nu$-generic inverse branches of $f^n$., Comment: 21 pages, to appear in Math. Ann.

Published
2008

38. Bernoulli coding map and almost sure invariance principle for endomorphisms of $\mathbb{P}^k$

Author

Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, Mathematics - Complex Variables, 37F10, 37C40, 60F17
Abstract

Let $f$ be an holomorphic endomorphism of $\mathbb{P}^k$ and $\mu$ be its measure of maximal entropy. We prove an Almost Sure Invariance Principle for the systems $(\mathbb{P}^k,f,\mu)$. Our class $\cal{U}$ of observables includes the H\"older functions and unbounded ones which present analytic singularities. The proof is based on a geometric construction of a Bernoulli coding map $\omega: (\Sigma, s, \nu) \to (\mathbb{P}^k,f,\mu)$. We obtain the invariance principle for an observable $\psi$ on $(\mathbb{P}^k,f,\mu)$ by applying Philipp-Stout's theorem for $\chi = \psi \circ \omega$ on $(\Sigma, s, \nu)$. The invariance principle implies the Central Limit Theorem as well as several statistical properties for the class $\cal{U}$. As an application, we give a \emph{direct} proof of the absolute continuity of the measure $\mu$ when it satisfies Pesin's formula. This approach relies on the Central Limit Theorem for the unbounded observable $\log \textsf{Jac} f \in \cal{U}$., Comment: 25 pages, to appear in Probability Theory and Related Fields

Published
2007

39. Une caracterisation des endomorphismes de Lattes par leur mesure de Green

Author

Berteloot, Francois and Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, 32H50, 32U40, 37C45
Abstract

We show that the Lattes endomorphisms are the only holomorphic endomorphisms of the complex k-dimensional projective space whose measure of maximal entropy is absolutely continuous with respect to the Lebesgue measure. As a consequence, Lattes endomorphisms are also characterized by other extremal properties as the maximality of the Hausdorff dimension of their measure of maximal entropy or the minimality of their Liapounov exponents. Our proof uses a linearization method which is of independant interest and a previous characterization by the regularity of the Green current., Comment: a paraitre in Comment. Math. Helv

Published
2005

40. Dimension de la mesure d'\'{e}quilibre d'applications m\'{e}romorphes

Author

Dinh, Tien-Cuong and Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, 37C45, 37F10, 32H50
Abstract

Let $f$ be a dominating meromorphic self-map of a compact K\"{a}hler manifold. Assume that the topological degree of $f$ is larger than the other dynamical degrees. We give estimates of the dimension of the equilibrium measure of $f$, which involve the Lyapounov exponents., Comment: in french, \`{a} paraitre dans J. Geom. Anal

Published
2004

41. Linearisation d'endomorphismes holomorphes de CP(k) et caracterisation des exemples de Lattes par leur mesure de Green

Author

Berteloot, Francois and Dupont, Christophe

Subjects
Mathematics - Dynamical Systems, Mathematics - Complex Variables, 32H50, 37F
Abstract

Let f an holomorphic endomorphism of CP(k) with degree larger than 2. We show that if the Green measure of f is not singular, then f is rigid : it is a Lattes example. The proof relies on a linearization property of the iterates of f, along typical orbits. This property allow us to regularize the Green current, and to prove the rigidity. -- -- -- Soit f un endomorphisme holomorphe de CP(k) de degre plus grand que 2. Nous montrons que si la mesure de Green de f n'est pas singuliere, alors f est tres rigide : c'est un exemple de Lattes. La demonstration repose sur une propriete de linearisation des iteres de f le long d'orbites typiques. Cette propriete nous permet de "regulariser" le courant de Green, et d'en deduire la rigidite., Comment: 19 pages, in french

Published
2004

43. The global impact of the DRACMA guidelines cow’s milk allergy clinical practice

Author

Fiocchi, Alessandro, Schunemann, Holger, Ansotegui, Ignacio, Assa’ad, Amal, Bahna, Sami, Canani, Roberto Berni, Bozzola, Martin, Dahdah, Lamia, Dupont, Christophe, Ebisawa, Motohiro, Galli, Elena, Li, Haiqi, Kamenwa, Rose, Lack, Gideon, Martelli, Alberto, Pawankar, Ruby, Said, Maria, Sánchez-Borges, Mario, Sampson, Hugh, Shamir, Raanan, Spergel, Jonathan, Terracciano, Luigi, Vandenplas, Yvan, Venter, Carina, Waserman, Susan, Wong, Gary, and Brozek, Jan

Published
2018
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