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https://www.readbyqxmd.com/read/28365859/epithelial-mesenchymal-transition-and-collective-and-individual-cell-migration-regulate-epithelial-changes-in-the-amikacin-damaged-organ-of-corti
#1
Sabine Ladrech, Michel Eybalin, Jean-Luc Puel, Marc Lenoir
Characterizing the microenvironment of a damaged organ of Corti and identifying the basic mechanisms involved in subsequent epithelial reorganization are critical for improving the outcome of clinical therapies. In this context, we studied the expression of a variety of cell markers related to cell shape, cell adhesion and cell plasticity in the rat organ of Corti poisoned with amikacin. Our results indicate that, after severe outer hair cell losses, the cytoarchitectural reorganization of the organ of Corti implicates epithelial-mesenchymal transition mechanisms and involves both collective and individual cell migratory processes...
April 1, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28362209/secondary-metabolism-in-penicillium-expansum-emphasis-on-recent-advances-in-patulin-research
#2
Joanna Tannous, Nancy P Keller, Ali Atoui, André El Khoury, Roger Lteif, Isabelle P Oswald, Olivier Puel
The plant pathogenic fungus Penicillium expansum is a major concern of the global food industry due to its wide occurrence and ability to produce various mycotoxins, of which the most significant is patulin. Relatively less highlighted in the literature, in comparison with the other food-borne mycotoxins, patulin is one of the main factors in economic losses of vegetables and fruits. Otherwise, patulin is a health hazard which results in both short-term and long-term risks. This review includes knowledge on the biosynthetic mechanisms used for secondary metabolite production in P...
March 31, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28351740/evidencing-98-secondary-metabolites-of-penicillium-verrucosum-using-substrate-isotopic-labeling-and-high-resolution-mass-spectrometry
#3
Thaïs Hautbergue, Olivier Puel, Souria Tadrist, Lauriane Meneghetti, Michel Péan, Marcel Delaforge, Laurent Debrauwer, Isabelle P Oswald, Emilien L Jamin
Industrial applications of fungal compounds, coupled with the emergence of fungal threats to natural ecosystems and public health, have increased interest in filamentous fungi. Among all pathogenic fungi, Penicillium verrucosum is one of the most common mold-infecting stored cereals in temperate regions. However, it is estimated that 80% of fungal secondary metabolites remain unknown. To detect new P. verrucosum compounds, an untargeted metabolomic approach was applied to fungus grown on wheat grains labeled with stable isotopes: (i) natural grains (99% (12)C); (ii) grains enriched with 97% of (13)C; and (iii) grains enriched with 53% of (13)C and 97% of (15)N...
March 12, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28283063/systemic-human-ilc-precursors-provide-a-substrate-for-tissue-ilc-differentiation
#4
Ai Ing Lim, Yan Li, Silvia Lopez-Lastra, Ralph Stadhouders, Franziska Paul, Armanda Casrouge, Nicolas Serafini, Anne Puel, Jacinta Bustamante, Laura Surace, Guillemette Masse-Ranson, Eyal David, Helene Strick-Marchand, Lionel Le Bourhis, Roberto Cocchi, Davide Topazio, Paolo Graziano, Lucia Anna Muscarella, Lars Rogge, Xavier Norel, Jean-Michel Sallenave, Matthieu Allez, Thomas Graf, Rudi W Hendriks, Jean-Laurent Casanova, Ido Amit, Hans Yssel, James P Di Santo
Innate lymphoid cells (ILCs) represent innate versions of T helper and cytotoxic T cells that differentiate from committed ILC precursors (ILCPs). How ILCPs give rise to mature tissue-resident ILCs remains unclear. Here, we identify circulating and tissue ILCPs in humans that fail to express the transcription factors and cytokine outputs of mature ILCs but have these signature loci in an epigenetically poised configuration. Human ILCPs robustly generate all ILC subsets in vitro and in vivo. While human ILCPs express low levels of retinoic acid receptor (RAR)-related orphan receptor C (RORC) transcripts, these cells are found in RORC-deficient patients and retain potential for EOMES(+) natural killer (NK) cells, interferon gamma-positive (IFN-γ(+)) ILC1s, interleukin (IL)-13(+) ILC2s, and for IL-22(+), but not for IL-17A(+) ILC3s...
March 9, 2017: Cell
https://www.readbyqxmd.com/read/28257049/identification-of-the-anti-aflatoxinogenic-activity-of-micromeria-graeca-and-elucidation-of-its-molecular-mechanism-in-aspergillus-flavus
#5
Rhoda El Khoury, Isaura Caceres, Olivier Puel, Sylviane Bailly, Ali Atoui, Isabelle P Oswald, André El Khoury, Jean-Denis Bailly
Of all the food-contaminating mycotoxins, aflatoxins, and most notably aflatoxin B₁ (AFB₁), are found to be the most toxic and economically costly. Green farming is striving to replace fungicides and develop natural preventive strategies to minimize crop contamination by these toxic fungal metabolites. In this study, we demonstrated that an aqueous extract of the medicinal plant Micromeria graeca-known as hyssop-completely inhibits aflatoxin production by Aspergillus flavus without reducing fungal growth...
March 1, 2017: Toxins
https://www.readbyqxmd.com/read/28209736/pejvakin-a-candidate-stereociliary-rootlet-protein-regulates-hair-cell-function-in-a-cell-autonomous-manner
#6
Marcin Kazmierczak, Piotr Kazmierczak, Anthony W Peng, Suzan L Harris, Prahar Shah, Jean-Luc Puel, Marc Lenoir, Santos J Franco, Martin Schwander
Mutations in the Pejvakin (PJVK) gene are thought to cause auditory neuropathy and hearing loss of cochlear origin by affecting noise-induced peroxisome proliferation in auditory hair cells and neurons. Here we demonstrate that loss of pejvakin in hair cells, but not in neurons, causes profound hearing loss and outer hair cell degeneration in mice. Pejvakin binds to and colocalizes with the rootlet component TRIOBP at the base of stereocilia in injectoporated hair cells, a pattern that is disrupted by deafness-associated PJVK mutations...
March 29, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28090315/chronic-mucocutaneous-candidiasis-disease-associated-with-inborn-errors-of-il-17-immunity
#7
REVIEW
Satoshi Okada, Anne Puel, Jean-Laurent Casanova, Masao Kobayashi
Chronic mucocutaneous candidiasis (CMC) is characterized by recurrent or persistent infections affecting the nails, skin and oral and genital mucosae caused by Candida spp., mainly Candida albicans. CMC is an infectious phenotype in patients with inherited or acquired T-cell deficiency. Patients with autosomal-dominant (AD) hyper IgE syndrome (HIES), AD signal transducer and activator of transcription 1 (STAT1) gain-of-function, autosomal-recessive (AR) deficiencies in interleukin (IL)-12 receptor β1 (IL-12Rβ1), IL-12p40, caspase recruitment domain-containing protein 9 (CARD9) or retinoic acid-related orphan receptor γT (RORγT) or AR autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) develop CMC as a major infectious phenotype that is categorized as Syndromic CMC...
December 2016: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28069966/inherited-human-irak-1-deficiency-selectively-impairs-tlr-signaling-in-fibroblasts
#8
Erika Della Mina, Alessandro Borghesi, Hao Zhou, Salim Bougarn, Sabri Boughorbel, Laura Israel, Ilaria Meloni, Maya Chrabieh, Yun Ling, Yuval Itan, Alessandra Renieri, Iolanda Mazzucchelli, Sabrina Basso, Piero Pavone, Raffaele Falsaperla, Roberto Ciccone, Rosa Maria Cerbo, Mauro Stronati, Capucine Picard, Orsetta Zuffardi, Laurent Abel, Damien Chaussabel, Nico Marr, Xiaoxia Li, Jean-Laurent Casanova, Anne Puel
Most members of the Toll-like receptor (TLR) and interleukin-1 receptor (IL-1R) families transduce signals via a canonical pathway involving the MyD88 adapter and the interleukin-1 receptor-associated kinase (IRAK) complex. This complex contains four molecules, including at least two (IRAK-1 and IRAK-4) active kinases. In mice and humans, deficiencies of IRAK-4 or MyD88 abolish most TLR (except for TLR3 and some TLR4) and IL-1R signaling in both leukocytes and fibroblasts. TLR and IL-1R responses are weak but not abolished in mice lacking IRAK-1, whereas the role of IRAK-1 in humans remains unclear...
January 24, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28058271/remodeling-of-the-inner-hair-cell-microtubule-meshwork-in-a-mouse-model-of-auditory-neuropathy-auna1
#9
Clément Surel, Marie Guillet, Marc Lenoir, Jérôme Bourien, Gaston Sendin, Willy Joly, Benjamin Delprat, Marci M Lesperance, Jean-Luc Puel, Régis Nouvian
Auditory neuropathy 1 (AUNA1) is a form of human deafness resulting from a point mutation in the 5' untranslated region of the Diaphanous homolog 3 (DIAPH3) gene. Notably, the DIAPH3 mutation leads to the overexpression of the DIAPH3 protein, a formin family member involved in cytoskeleton dynamics. Through study of diap3-overexpressing transgenic (Tg) mice, we examine in further detail the anatomical, functional, and molecular mechanisms underlying AUNA1. We identify diap3 as a component of the hair cells apical pole in wild-type mice...
November 2016: ENeuro
https://www.readbyqxmd.com/read/28011069/alanine-scanning-mutagenesis-of-human-signal-transducer-and-activator-of-transcription-1-to-estimate-loss-or-gain-of-function-variants
#10
Reiko Kagawa, Ryoji Fujiki, Miyuki Tsumura, Sonoko Sakata, Shiho Nishimura, Yuval Itan, Xiao-Fei Kong, Zenichiro Kato, Hidenori Ohnishi, Osamu Hirata, Satoshi Saito, Maiko Ikeda, Jamila El Baghdadi, Aziz Bousfiha, Kaori Fujiwara, Matias Oleastro, Judith Yancoski, Laura Perez, Silvia Danielian, Fatima Ailal, Hidetoshi Takada, Toshiro Hara, Anne Puel, Stéphanie Boisson-Dupuis, Jacinta Bustamante, Jean-Laurent Casanova, Osamu Ohara, Satoshi Okada, Masao Kobayashi
BACKGROUND: Germline heterozygous mutations in human signal transducer and activator of transcription 1 (STAT1) can cause loss of function (LOF), as in patients with Mendelian susceptibility to mycobacterial diseases, or gain of function (GOF), as in patients with chronic mucocutaneous candidiasis. LOF and GOF mutations are equally rare and can affect the same domains of STAT1, especially the coiled-coil domain (CCD) and DNA-binding domain (DBD). Moreover, 6% of patients with chronic mucocutaneous candidiasis with a GOF STAT1 mutation have mycobacterial disease, obscuring the functional significance of the identified STAT1 mutations...
December 14, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27930337/genetic-immunological-and-clinical-features-of-patients-with-bacterial-and-fungal-infections-due-to-inherited-il-17ra-deficiency
#11
Romain Lévy, Satoshi Okada, Vivien Béziat, Kunihiko Moriya, Caini Liu, Louis Yi Ann Chai, Mélanie Migaud, Fabian Hauck, Amein Al Ali, Cyril Cyrus, Chittibabu Vatte, Turkan Patiroglu, Ekrem Unal, Marie Ferneiny, Nobuyuki Hyakuna, Serdar Nepesov, Matias Oleastro, Aydan Ikinciogullari, Figen Dogu, Takaki Asano, Osamu Ohara, Ling Yun, Erika Della Mina, Didier Bronnimann, Yuval Itan, Florian Gothe, Jacinta Bustamante, Stéphanie Boisson-Dupuis, Natalia Tahuil, Caner Aytekin, Aicha Salhi, Saleh Al Muhsen, Masao Kobayashi, Julie Toubiana, Laurent Abel, Xiaoxia Li, Yildiz Camcioglu, Fatih Celmeli, Christoph Klein, Suzan A AlKhater, Jean-Laurent Casanova, Anne Puel
Chronic mucocutaneous candidiasis (CMC) is defined as recurrent or persistent infection of the skin, nails, and/or mucosae with commensal Candida species. The first genetic etiology of isolated CMC-autosomal recessive (AR) IL-17 receptor A (IL-17RA) deficiency-was reported in 2011, in a single patient. We report here 21 patients with complete AR IL-17RA deficiency, including this first patient. Each patient is homozygous for 1 of 12 different IL-17RA alleles, 8 of which create a premature stop codon upstream from the transmembrane domain and have been predicted and/or shown to prevent expression of the receptor on the surface of circulating leukocytes and dermal fibroblasts...
December 20, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27915442/co-exposure-to-low-doses-of-the-food-contaminants-deoxynivalenol-and-nivalenol-has-a-synergistic-inflammatory-effect-on-intestinal-explants
#12
Imourana Alassane-Kpembi, Olivier Puel, Philippe Pinton, Anne-Marie Cossalter, Ting-Chao Chou, Isabelle P Oswald
The global incidence of Fusarium head blight and attendant cereal grains multi-contamination by the trichothecene mycotoxins deoxynivalenol (DON) and nivalenol (NIV) are increasing as a possible result of climate change and inadequate agricultural practices. At the molecular level, these mycotoxins bind to the ribosome, activate the mitogen-activated protein kinase and induce a local and systemic inflammation. DON is of public health concern owing to the narrow margin between exposure and tolerable daily intake...
December 3, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27913847/patulin-transformation-products-and-last-intermediates-in-its-biosynthetic-pathway-e-and-z-ascladiol-are-not-toxic-to-human-cells
#13
Joanna Tannous, Selma P Snini, Rhoda El Khoury, Cécile Canlet, Philippe Pinton, Yannick Lippi, Imourana Alassane-Kpembi, Thierry Gauthier, André El Khoury, Ali Atoui, Ting Zhou, Roger Lteif, Isabelle P Oswald, Olivier Puel
Patulin is the main mycotoxin contaminating apples. During the brewing of alcoholic beverages, this mycotoxin is degraded to ascladiol, which is also the last precursor of patulin. The present study aims (1) to characterize the last step of the patulin biosynthetic pathway and (2) to describe the toxicity of ascladiol. A patE deletion mutant was generated in Penicillium expansum. In contrast to the wild strain, this mutant does not produce patulin but accumulates high levels of E-ascladiol with few traces of Z-ascladiol...
December 2, 2016: Archives of Toxicology
https://www.readbyqxmd.com/read/27885426/prospective-cohort-study-assessing-chronic-pain-in-patients-following-minor-surgery-for-breast-cancer
#14
Régis Fuzier, Floriane Puel, Philippe Izard, Agnès Sommet, Sébastien Pierre
PURPOSE: Pain after tumorectomy and sentinel lymph node dissection is poorly reported in the literature. We carried out a prospective survey aimed at assessing pain three months after such minor surgery for breast cancer. METHODS: The study was approved by the local ethics committee. Most surgeries followed a standard protocol involving general anesthesia with no regional analgesia technique, laryngeal mask, sufentanil and propofol for induction, and multimodal analgesia during the postoperative period...
November 24, 2016: Journal of Anesthesia
https://www.readbyqxmd.com/read/27797537/from-catalepsy-to-psychical-research-the-itinerary-of-timoth%C3%A3-e-puel-1812-1890
#15
Renaud Evrard, Erika Annabelle Pratte
The physician and botanist Timothée Puel (1812-1890) lived through a pivotal period of psychology (1848-1878), between the academic prohibition of the study of animal magnetism to its disjointed recovery in hypnotism and psychical research. One of his cases of "catalepsy complicated with somnambulism" triggered a lively debate on "extraordinary neuroses" within the young Société médico-psychologique [Medico-psychological Society]. In 1874, Puel founded the Revue de psychologie expérimentale [Journal of Experimental Psychology], the first of its kind in French, which he intended as the vehicle of international interest in psychical research, the scholarly and institutionalized study of "psychism" that prepared the way for the recognition of academic psychology...
October 31, 2016: History of Psychology
https://www.readbyqxmd.com/read/27794029/reversible-p53-inhibition-prevents-cisplatin%C3%A2-ototoxicity-without-blocking-chemotherapeutic-efficacy
#16
Nesrine Benkafadar, Julien Menardo, Jérôme Bourien, Régis Nouvian, Florence François, Didier Decaudin, Domenico Maiorano, Jean-Luc Puel, Jing Wang
Cisplatin is a widely used chemotherapy drug, despite its significant ototoxic side effects. To date, the mechanism of cisplatin-induced ototoxicity remains unclear, and hearing preservation during cisplatin-based chemotherapy in patients is lacking. We found activation of the ATM-Chk2-p53 pathway to be a major determinant of cisplatin ototoxicity. However, prevention of cisplatin-induced ototoxicity is hampered by opposite effects of ATM activation upon sensory hair cells: promoting both outer hair cell death and inner hair cell survival...
January 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/27717802/effects-of-patulin-and-ascladiol-on-porcine-intestinal-mucosa-an-ex%C3%A2-vivo-approach
#17
Leila Maidana, Juliana R Gerez, Rhoda El Khoury, Felipe Pinho, Olivier Puel, Isabelle P Oswald, Ana Paula F R L Bracarense
Patulin (PAT) is a secondary metabolite mainly produced by Aspergillus and Penicillium that is frequently found contaminating apples and rotten fruits. Patulin can be transformed in potencially less toxic compounds such as ascladiol (ASC). Toxic effects of patulin were described in rats and in in vitro models, however concerning ascladiol, data are restricted to metabolic pathways. The aim of the present study was to evaluate the effects of different concentrations of PAT (10 μM, 30 μM, 100 μM) and ASC (30 μM, 100 μM) on intestinal tissue using the jejunal explant model...
December 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/27704212/high-mobility-group-box-1-hmgb1-dual-functions-in-the-cochlear-auditory-neurons-in-response-to-stress
#18
Sabine Ladrech, Jing Wang, Marc Mathieu, Jean-Luc Puel, Marc Lenoir
High mobility group box 1 (HMGB1) is a DNA-binding protein that facilitates gene transcription and may act extracellularly as a late mediator of inflammation. The roles of HMGB1 in the pathogenesis of the spiral ganglion neurons (SGNs) of the cochlea are currently unknown. In the present study, we tested the hypothesis that early phenotypical changes in the SGNs of the amikacin-poisoned rat cochlea are mediated by HMGB1. Our results showed that a marked downregulation of HMGB1 had occurred by completion of amikacin treatment, coinciding with acute damage at the dendrite extremities of the SGNs...
March 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/27647349/dual-t-cell-and-b-cell-intrinsic-deficiency-in-humans-with-biallelic-rltpr-mutations
#19
Yi Wang, Cindy S Ma, Yun Ling, Aziz Bousfiha, Yildiz Camcioglu, Serge Jacquot, Kathryn Payne, Elena Crestani, Romain Roncagalli, Aziz Belkadi, Gaspard Kerner, Lazaro Lorenzo, Caroline Deswarte, Maya Chrabieh, Etienne Patin, Quentin B Vincent, Ingrid Müller-Fleckenstein, Bernhard Fleckenstein, Fatima Ailal, Lluis Quintana-Murci, Sylvie Fraitag, Marie-Alexandra Alyanakian, Marianne Leruez-Ville, Capucine Picard, Anne Puel, Jacinta Bustamante, Stéphanie Boisson-Dupuis, Marie Malissen, Bernard Malissen, Laurent Abel, Alain Hovnanian, Luigi D Notarangelo, Emmanuelle Jouanguy, Stuart G Tangye, Vivien Béziat, Jean-Laurent Casanova
Combined immunodeficiency (CID) refers to inborn errors of human T cells that also affect B cells because of the T cell deficit or an additional B cell-intrinsic deficit. In this study, we report six patients from three unrelated families with biallelic loss-of-function mutations in RLTPR, the mouse orthologue of which is essential for CD28 signaling. The patients have cutaneous and pulmonary allergy, as well as a variety of bacterial and fungal infectious diseases, including invasive tuberculosis and mucocutaneous candidiasis...
October 17, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27495558/-not-available
#20
J Toubiana, J L Casanova, A Puel
No abstract text is available yet for this article.
June 2016: Médecine et Maladies Infectieuses
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