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https://www.readbyqxmd.com/read/30546374/the-cell-wall-derived-xyloglucan-is-a-new-damp-triggering-plant-immunity-in-vitis-vinifera-and-arabidopsis-thaliana
#1
Justine Claverie, Suzanne Balacey, Christelle Lemaître-Guillier, Daphnée Brulé, Annick Chiltz, Lucie Granet, Elodie Noirot, Xavier Daire, Benoît Darblade, Marie-Claire Héloir, Benoit Poinssot
Damage-associated molecular patterns (DAMPs) are endogenous molecules that can activate the plant innate immunity. DAMPs can derive from the plant cell wall, which is composed of a complex mixture of cellulose, hemicellulose, and pectin polysaccharides. Fragments of pectin, called oligogalacturonides (OG), can be released after wounding or by pathogen-encoded cell wall degrading enzymes (CWDEs) such as polygalacturonases (PGs). OG are known to induce innate immune responses, including the activation of mitogen-activated protein kinases (MAPKs), production of H2 O2 , defense gene activation, and callose deposition...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/30482664/treatment-of-prosthetic-joint-infection-established-patient-relationships-may-impact-medical-decision-making
#2
Sean P Ryan, Tyler J Vovos, Cierra S Hong, Michael A Bergen, Peter M Formby, Michael P Bolognesi, Thorsten M Seyler
BACKGROUND: Choosing the intervention for prosthetic joint infections, whether debridement, antibiotics, and implant retention (DAIR), or explant and antibiotic spacer placement, is multifactorial. One characteristic that may influence this decision is a previously established relationship with the patient. We hypothesized that patients receiving their arthroplasty at an outside institution and presenting with infection would be more likely to undergo removal of their implant without an attempt at DAIR compared to patients who underwent primary arthroplasty at the investigating institution...
October 9, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/30478443/gain-of-function-dnmt3a-mutations-cause-microcephalic-dwarfism-and-hypermethylation-of-polycomb-regulated-regions
#3
Patricia Heyn, Clare V Logan, Adeline Fluteau, Rachel C Challis, Tatsiana Auchynnikava, Carol-Anne Martin, Joseph A Marsh, Francesca Taglini, Fiona Kilanowski, David A Parry, Valerie Cormier-Daire, Chin-To Fong, Kate Gibson, Vivian Hwa, Lourdes Ibáñez, Stephen P Robertson, Giorgia Sebastiani, Juri Rappsilber, Robin C Allshire, Martin A M Reijns, Andrew Dauber, Duncan Sproul, Andrew P Jackson
DNA methylation and Polycomb are key factors in the establishment of vertebrate cellular identity and fate. Here we report de novo missense mutations in DNMT3A, which encodes the DNA methyltransferase DNMT3A. These mutations cause microcephalic dwarfism, a hypocellular disorder of extreme global growth failure. Substitutions in the PWWP domain abrogate binding to the histone modifications H3K36me2 and H3K36me3, and alter DNA methylation in patient cells. Polycomb-associated DNA methylation valleys, hypomethylated domains encompassing developmental genes, become methylated with concomitant depletion of H3K27me3 and H3K4me3 bivalent marks...
November 26, 2018: Nature Genetics
https://www.readbyqxmd.com/read/30474047/salvage-debridement-antibiotics-and-implant-retention-dair-with-local-injection-of-a-selected-cocktail-of-bacteriophages-is-it-an-option-for-an-elderly-patient-with-relapsing-staphylococcus-aureus-prosthetic-joint-infection
#4
Tristan Ferry, Gilles Leboucher, Cindy Fevre, Yannick Herry, Anne Conrad, Jérôme Josse, Cécile Batailler, Christian Chidiac, Mathieu Medina, S Lustig, Frédéric Laurent
Local injection of a bacteriophages mix during debridement, antibiotics and implant retention ("DAIR") was performed to treat a relapsing Staphylococcus aureus chronic prosthetic joint infection (PJI). This salvage treatment was safe and associated with a clinical success. Scientific evaluation of the potential clinical benefit of bacteriophages as antibiofilm treatment in PJI is now feasible and required.
November 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/30450712/a-retrospective-study-on-sleep-disordered-breathing-in-morquio-a-syndrome
#5
Giulia Facchina, Alessandro Amaddeo, Geneviève Baujat, Sylvain Breton, Caroline Michot, Briac Thierry, Syril James, Timothé de Saint Denis, Michel Zerah, Sonia Khirani, Valerie Cormier-Daire, Brigitte Fauroux
Respiratory problems are common in Morquio-A syndrome (MPS IVA) but objective data on sleep-disordered breathing are scarce. The aim of our study was to review polygraphic (PG) findings and the need for noninvasive continuous positive airway pressure (CPAP) or noninvasive ventilation (NIV) in children with MPS IVA. A retrospective review of the clinical charts and PG of 16 consecutive children (7 boys, mean age 10.5 ± 4.2 years) with MPS IVA seen over a period of 3 years was performed. The prevalence of obstructive sleep apnea (OSA) was 69% with only five patients, all younger than 10 years old, having a normal PG...
November 18, 2018: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/30439444/calcium-activated-nucleotidase-1-cant1-is-critical-for-glycosaminoglycan-biosynthesis-in-cartilage-and-endochondral-ossification
#6
Chiara Paganini, Luca Monti, Rossella Costantini, Roberta Besio, Silvia Lecci, Marco Biggiogera, Kun Tian, Jean-Marc Schwartz, Céline Huber, Valérie Cormier-Daire, Beth G Gibson, Katarzyna A Pirog, Antonella Forlino, Antonio Rossi
Desbuquois dysplasia type 1 (DBQD1) is a chondrodysplasia caused by mutations in CANT1 gene encoding an ER/Golgi calcium activated nucleotidase 1 that hydrolyses UDP. Here, using Cant1 knock-in and knock-out mice recapitulating DBQD1 phenotype, we report that CANT1 plays a crucial role in cartilage proteoglycan synthesis and in endochondral ossification. Specifically, the glycosaminoglycan synthesis was decreased in chondrocytes from Cant1 knock-out mice and their hydrodynamic size was reduced, whilst the sulfation was increased and the overall proteoglycan secretion was delayed...
November 12, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
https://www.readbyqxmd.com/read/30401558/acceptable-success-rate-in-patients-with-periprosthetic-knee-joint-infection-treated-with-debridement-antibiotics-and-implant-retention
#7
Casper S Ottesen, Anders Troelsen, Håkon Sandholdt, Steffen Jacobsen, Henrik Husted, Kirill Gromov
BACKGROUND: Acute periprosthetic joint infection (PJI) following primary total knee arthroplasty (TKA) surgery can be treated with debridement, antibiotics, and implant retention (DAIR). However, varying results have been reported in the literature and optimal timing of the procedure is still debated. In this retrospective cohort study, we investigate (a) success rate of DAIR for treating PJI following primary TKA surgery and (b) whether time after primary surgery until DAIR and (c) type of isolated microorganism influence outcome...
October 9, 2018: Journal of Arthroplasty
https://www.readbyqxmd.com/read/30319802/crystal-structure-and-synthesis-of-3-1-h-pyrrol-2-yl-1-thio-phen-2-yl-propanone
#8
Dáire Gibbons, Ganapathi Emandi, Mathias O Senge
The title compound, C11 H9 NOS, was obtained in an improved yield compared to previous literature methods. The mol-ecule is essentially planar with a maximum deviation of 0.085 Å from the mean plane through all non-H atoms. There is directive inter-molecular hydrogen bonding in the form of N-H⋯O hydrogen bonds with a distance of 2.889 (3) Å between the pyrrole amine and the ketone carbonyl O atom. The resulting hydrogen-bonding network defines a ribbon parallel to the a axis. These ribbons form offset stacks along the b axis...
October 1, 2018: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/30303737/impairment-of-chondrogenesis-and-microfibrillar-network-in-adamtsl2-deficiency
#9
Laure Delhon, Clémentine Mahaut, Nicolas Goudin, Emilie Gaudas, Kevin Piquand, Wilfried Le Goff, Valérie Cormier-Daire, Carine Le Goff
Mutations in the a disintegrin and metalloproteinase with thrombospondin motif-like 2 ( ADAMTSL2) gene are responsible for the autosomal recessive form of geleophysic dysplasia, which is characterized by short stature, short extremities, and skeletal abnormalities. However, the exact function of ADAMTSL2 is unknown. To elucidate the role of this protein in skeletal development, we generated complementary knockout (KO) mouse models with either total or chondrocyte Adamtsl2 deficiency. We observed that the Adamtsl2 KO mice displayed skeletal abnormalities reminiscent of the human phenotype...
October 10, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/30290637/therapeutic-outcome-of-spinal-implant-infections-caused-by-staphylococcus-aureus-a-retrospective-observational-study
#10
MULTICENTER STUDY
Oh-Hyun Cho, In-Gyu Bae, Song Mi Moon, Seong Yeon Park, Yee Gyung Kwak, Baek-Nam Kim, Shi Nae Yu, Min Hyok Jeon, Tark Kim, Eun Ju Choo, Eun Jung Lee, Tae Hyong Kim, Seong-Ho Choi, Jin-Won Chung, Kyung-Chung Kang, Jung Hee Lee, Yu-Mi Lee, Mi Suk Lee, Ki-Ho Park
Spinal implant infection is a rare but significant complication of spinal fusion surgery, and the most common pathogen is Staphylococcus aureus. It is difficult to treat due to this pathogen's biofilm-forming ability and antibiotic resistance. We evaluated the therapeutic outcome of treatments for S aureus spinal implant infections. We retrospectively reviewed all patients with S aureus spinal implant infections at 11 tertiary-care hospitals over a 9-year period. Parameters predictive of treatment failure and recurrence were analyzed by Cox regression...
October 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/30233819/state-of-the-art-diagnosis-and-surgical-treatment-of-acute-peri-prosthetic-joint-infection-following-primary-total-hip-arthroplasty
#11
Pablo A Slullitel, José I Oñativia, Martin A Buttaro, Marisa L Sánchez, Fernando Comba, Gerardo Zanotti, Francisco Piccaluga
Acute peri-prosthetic joint infection (PJI) following total hip arthroplasty (THA) is a potentially devastating and undesired complication, with a prevalence of 0.3% to 2.9%. Its suspicion begins with a meticulous physical examination and anamnesis. Diagnosis should be made on the basis of the Musculoskeletal Infection Society criteria. Serum and synovial biomarkers are very useful tools when major criteria are absent.Although sometimes not possible due to medical conditions, surgery is usually the first line of treatment...
July 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/30229892/relationship-distress-as-a-mediator-of-adverse-childhood-experiences-and-health-implications-for-clinical-practice-with-economically-vulnerable-racial-and-ethnic-minorities
#12
Naomi J Wheeler, Andrew P Daire, Sejal M Barden, Ryan G Carlson
Adverse childhood experiences (ACE) are interpersonal sources of distress negatively correlated with physical and mental health, as well as maladaptive intimate partner conflict strategies in adulthood. Economically vulnerable racial and ethnic minorities report the greatest disparities in exposure to ACE, as well as relationship distress and health. Yet, little is known about the connections between ACE, relationship distress, and health. We therefore tested a theoretical model for the mediating role of relationship distress to explain the ACE-health connection with a sample (N = 96) predominantly racial/ethnic minorities (87%) with low income...
September 19, 2018: Family Process
https://www.readbyqxmd.com/read/30189006/use-of-gentamicin-impregnated-beads-or-sponges-in-the-treatment-of-early-acute-periprosthetic-joint-infection-a-propensity-score-analysis
#13
Marjan Wouthuyzen-Bakker, Claudia A M Löwik, Bas A S Knobben, Wierd P Zijlstra, Joris J W Ploegmakers, Glen Mithoe, Aziz Al Moujahid, Greetje A Kampinga, Paul C Jutte
Objectives: Early acute periprosthetic joint infections (PJIs) treated with debridement, antibiotics and implant retention (DAIR) have failure rates ranging from 10% to 60%. We determined the efficacy of applying local gentamicin-impregnated beads and/or sponges during debridement in early PJI. Methods: Patients with early acute PJI, defined as less than 21 days of symptoms and treated with DAIR within 90 days after index surgery, were retrospectively evaluated...
September 5, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/30128265/analysis-of-the-klic-score-an-outcome-predictor-tool-for-prosthetic-joint-infections-treated-with-debridement-antibiotics-and-implant-retention
#14
Sean Dx Duffy, Nathanael Ahearn, Elizabeth Sr Darley, Andrew J Porteous, James R Murray, Nicholas R Howells
Background: Debridement, antibiotics and implant retention (DAIR) forms the primary treatment modality for early prosthetic joint infection (PJI). The KLIC score has been proposed as a risk stratification tool for use in predicting outcome of prosthetic knee infections. Our aim was to determine the accuracy of this scoring system at an independent tertiary PJI centre in a typical DAIR population. Methods: Between 2008 and 2015, patients with infected knee prostheses treated with DAIR were identified. The patient notes and blood tests were reviewed retrospectively and the 'KLIC-score' was calculated and correlated with outcome...
2018: Journal of Bone and Joint Infection
https://www.readbyqxmd.com/read/30112681/procedure-for-single-stage-implant-retention-for-chronic-periprosthetic-infection-using-topical-degradable-calcium-based-antibiotics
#15
Yves Gramlich, Gerhard Walter, Alexander Klug, Johannes Harbering, Matthias Kemmerer, Reinhard Hoffmann
INTRODUCTION: Surgical treatment using DAIR (debridement, systemic antibiotics, and implant retention) can lead to high rates of treatment success in cases of early periprosthetic joint infection (PJI) but can fail in late-onset cases. Supplementary local antibiotic therapy is not yet generally established and lacks evidence-based proof of efficacy. The aim of this study was to analyze DAIR outcomes in recurrent PJI cases and patients who are not suitable for a two-stage exchange, using additional degradable calcium-based antibiotics...
August 15, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/30092305/clinical-outcome-and-risk-factors-for-failure-in-late-acute-prosthetic-joint-infections-treated-with-debridement-and-implant-retention
#16
Marjan Wouthuyzen-Bakker, Marine Sebillotte, Jose Lomas, Adrian Taylor, Eva Benavent Palomares, Oscar Murillo, Javad Parvizi, Noam Shohat, Javier Cobo Reinoso, Rosa Escudero Sánchez, Marta Fernandez-Sampedro, Eric Senneville, Kaisa Huotari, José Maria Barbero Allende, Joaquín Garcia-Cañete, Jaime Lora-Tamayo, Matteo Carlo Ferrari, Danguole Vaznaisiene, Erlangga Yusuf, Craig Aboltins, Rihard Trebse, Mauro José Salles, Natividad Benito, Andrea Vila, Maria Dolores Del Toro, Tobias Siegfried Kramer, Sabine Petersdorf, Vicens Diaz-Brito, Zeliha Kocak Tufan, Marisa Sanchez, Cédric Arvieux, Alex Soriano
OBJECTIVES: Debridement, antibiotics and implant retention (DAIR) is the recommended treatment for all acute prosthetic joint infections (PJI), but its efficacy in patients with late acute (LA) PJI is not well described. METHODS: Patients diagnosed with LA PJI between 2005 and 2015 were retrospectively evaluated. LA PJI was defined as the development of acute symptoms (≤ 3 weeks) occurring ≥ 3 months after arthroplasty. Failure was defined as: (i) the need for implant removal, (ii) infection related death, (iii) the need for suppressive antibiotic therapy and/or (iv) relapse or reinfection during follow-up...
August 7, 2018: Journal of Infection
https://www.readbyqxmd.com/read/30083889/should-we-expand-the-indications-for-the-dair-debridement-antibiotic-therapy-and-implant-retention-procedure-for-staphylococcus-aureus-prosthetic-joint-infections-a-multicenter-retrospective-study
#17
O Lesens, T Ferry, E Forestier, E Botelho-Nevers, P Pavese, E Piet, B Pereira, E Montbarbon, B Boyer, S Lustig, S Descamps
To evaluate factors associated with failure in patients treated with DAIR (debridement, antibiotic therapy, and implant retention) for Staphylococcus aureus prosthetic joint infections (PJIs). We retrospectively analyzed consecutive patients with stable PJI due to S. aureus treated with DAIR at six hospitals between 2010 and 2014. Cox proportional hazards regression was used to study factors associated with treatment failure at 2 years. Of 154 eligible patients, 137 were included (mean age 73 ± 13 years; male 56%)...
October 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/30082715/slc10a7-mutations-cause-a-skeletal-dysplasia-with-amelogenesis-imperfecta-mediated-by-gag-biosynthesis-defects
#18
Johanne Dubail, Céline Huber, Sandrine Chantepie, Stephan Sonntag, Beyhan Tüysüz, Ercan Mihci, Christopher T Gordon, Elisabeth Steichen-Gersdorf, Jeanne Amiel, Banu Nur, Irene Stolte-Dijkstra, Albertien M van Eerde, Koen L van Gassen, Corstiaan C Breugem, Alexander Stegmann, Caroline Lekszas, Reza Maroofian, Ehsan Ghayoor Karimiani, Arnaud Bruneel, Nathalie Seta, Arnold Munnich, Dulce Papy-Garcia, Muriel De La Dure-Molla, Valérie Cormier-Daire
Skeletal dysplasia with multiple dislocations are severe disorders characterized by dislocations of large joints and short stature. The majority of them have been linked to pathogenic variants in genes encoding glycosyltransferases, sulfotransferases or epimerases required for glycosaminoglycan synthesis. Using exome sequencing, we identify homozygous mutations in SLC10A7 in six individuals with skeletal dysplasia with multiple dislocations and amelogenesis imperfecta. SLC10A7 encodes a 10-transmembrane-domain transporter located at the plasma membrane...
August 6, 2018: Nature Communications
https://www.readbyqxmd.com/read/30079439/oral-hairy-leukoplakia-in-healthy-immunocompetent-patients-a-small-case-series
#19
Daire Shanahan, Rachel Cowie, Helen Rogers, Konrad Staines
BACKGROUND: Oral hairy leukoplakia (OHL) is caused by the Epstein-Barr virus (EBV) and usually presents in patients with human immunodeficiency virus (HIV) infection and systemic immunosuppression. It is rarely seen in patients who are immunocompetent. It is clinically characterised as an asymptomatic, soft, white and corrugated lesion that cannot be scraped from the surface it adheres to. METHODS: Immunocompetent patients with OHL attending Bristol Dental Hospital within the last 6 months were identified...
September 2018: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/30013892/prosthesis-retention-after-an-infected-hip-prosthesis-hip-fractures-versus-primary-total-hip-prosthesis-data-from-1998-2015
#20
Lieke M A de Vries, William C Neve, Jeroen Steens
Background : A prosthetic joint infection (PJI) is a serious complication and specifically a burden for patients after hip fracture surgery, as they are mostly frail elderly patients with multiple comorbidities. Since treatment protocols are lacking there is a need to evaluate current practice. Aim: To evaluate the difference in prosthesis retention after an infected primary total hip replacement (THR) compared to PJI after hip prosthesis surgery performed for a hip fracture. Methods: We retrospectively collected data of patients who developed PJI after primary THR or after hip fracture surgery (THR or hemiarthroplasty) in the Westfriesgasthuis Hospital between 1998 and 2015...
2018: Journal of Bone and Joint Infection
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