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https://www.readbyqxmd.com/read/28199901/cd44-deficiency-enhanced-streptococcus-equi-ssp-zooepidemicus-dissemination-and-inflammation-response-in-a-mouse-model
#1
Qiang Fu, Pingping Xiao, Yaosheng Chen, Zigong Wei, Xiaohong Liu
Streptococcus equi ssp. zooepidemicus (S. zooepidemicus) is responsible for peritonitis, septicemia, meningitis, arthritis and several other serious diseases in various species. Recent studies have demonstrated that CD44 is implicated in the process of host defense against pathogenic microorganisms. In the present study, the role of CD44 in the host response to S. zooepidemicus infection was investigated in a mouse model. Upon intraperitoneal infection with S. zooepidemicus, the expression of CD44 on the peritoneal exudate cells from wild-type (WT) mice was increased...
February 9, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28187064/bacterial-osteomyelitis-or-nonbacterial-osteitis-in-children-a-study-involving-the-german-surveillance-unit-for-rare-diseases-in-childhood
#2
Veit Grote, Colen C G Silier, Agnes M Voit, Annette F Jansson
BACKGROUND: Although bacterial osteomyelitis (BO) is a commonly recognized diagnosis in pediatrics, it is often difficult to distinguish from nonbacterial osteitis (NBO). The goal of our study was to distinguish between the two disease entities and better define NBO. METHOD: Using the German Surveillance Unit for Rare Diseases in Childhood (Erhebungseinheit für Seltene Paediatrische Erkrankungen (ESPED) in Deutschland) this prospective study during a 5 five year period captured 657 patients at first diagnosis of either BO (n=378) or NBO (n=279) while analyzing epidemiologic, clinical and radiologic data...
December 13, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28178428/effect-of-histophilus-somni-on-heart-and-brain-microvascular-endothelial-cells
#3
D O'Toole, R Hunter, T Allen, B Zekarias, J Lehmann, K S Kim, D Grab, L B Corbeil
Histophilus somni is a pathogenic gram-negative bacterium responsible for pneumonia and septicemia in cattle. Sequelae include infectious thrombotic meningoencephalitis (ITME), myocarditis, arthritis, and abortion. These syndromes are associated with widespread vasculitis and thrombosis, implicating a role for endothelium in pathogenesis. Histopathologic and immunohistochemical investigation of 10 natural cases of bovine H. somni myocarditis and 1 case of ITME revealed intravascular H. somni in large biofilm-like aggregates adherent to the luminal surface of microvascular endothelium...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28166724/association-between-il-17-and-iga-in-the-joints-of-patients-with-inflammatory-arthropathies
#4
Ricardo Javier Eliçabe, Juan Eduardo Silva, Mabel Noemí Dave, María Gabriela Lacoste, Héctor Tamashiro, Rodrigo Blas, Alicia Munarriz, Gabriel Adrián Rabinovich, María Silvia Di Genaro
BACKGROUND: Hyperactive secretion and pathogenic effects of interleukin (IL)-17 and IgA have been detected in different arthropathies. Recent evidence has revealed that TH17 cytokines regulate mucosal IgA secretion. However, it is unknown whether and how IL-17 mediates synovial IgA production. Here we aim to investigate the connection of synovial IL-17 with IgA production in the joint. In this study we included synovial fluids (SF) from patients with rheumatoid arthritis (RA; n = 66), spondyloarthritis (SpA; n = 18) and osteoarthritis (OA; n = 36)...
February 6, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28165033/micheliolide-provides-protection-of-mice-against-staphylococcus-aureus-and-mrsa-infection-by-down-regulating-inflammatory-response
#5
Xinru Jiang, Yuli Wang, Yifei Qin, Weigang He, Adel Benlahrech, Qingwen Zhang, Xin Jiang, Zhenhui Lu, Guang Ji, Yuejuan Zheng
A major obstacle to therapy in intensive care units is sepsis caused by severe infection. In recent years gram-positive (G(+)) bacteria, most commonly staphylococci, are thought to be the main pathogens. Micheliolide (MCL) was demonstrated to provide a therapeutic role in rheumatoid arthritis, inflammatory intestinal disease, colitis-associated cancer, and lipopolysaccharide (LPS, the main component of G(-) bacterial cell wall) induced septic shock. We proved here that MCL played an anti-inflammatory role in Staphylococcus aureus (S...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28160762/dietary-therapy-in-patients-with-inflammatory-arthritis
#6
Rauli Mäkelä, Heli Mäkilä, Ritva Peltomaa
Context • The exact etiology of rheumatoid disease is currently unknown. Changes in the microbiota of the gastrointestinal (GI) tract, chronic bacterial infection of the upper urinary tract, increased permeability of the GI tract, and food sensitivities have been classified among the factors that may cause or aggravate the disease. Dietary deficiencies also may render patients more susceptible to inflammatory conditions and disorders of the immunological system. Objective • The study intended to determine the effects of a therapy consisting of dietary elimination, dietary supplements, and probiotics, collectively called DDP therapy, which is given either independently or in combination with conventional pharmacological agents...
January 2017: Alternative Therapies in Health and Medicine
https://www.readbyqxmd.com/read/28152087/radiological-features-of-experimental-staphylococcal-septic-arthritis-by-micro-computed-tomography-scan
#7
Farah Fatima, Ying Fei, Abukar Ali, Majd Mohammad, Malin C Erlandsson, Maria I Bokarewa, Muhammad Nawaz, Hadi Valadi, Manli Na, Tao Jin
BACKGROUND: Permanent joint dysfunction due to bone destruction occurs in up to 50% of patients with septic arthritis. Recently, imaging technologies such as micro computed tomography (μCT) scan have been widely used for preclinical models of autoimmune joint disorders. However, the radiological features of septic arthritis in mice are still largely unknown. METHODS: NMRI mice were intravenously or intra-articularly inoculated with S. aureus Newman or LS-1 strain...
2017: PloS One
https://www.readbyqxmd.com/read/28129954/-reactive-arthritis-due-to-clostridium-difficile-report-of-two-cases-and-literature-review
#8
P Garrigues, T de Roux, E Georgilopoulos, E Wanono, A Mathieu
INTRODUCTION: Reactive arthritis due to Clostridium difficile infection is uncommon. CASE REPORTS: We report two cases of reactive arthritis associated with C. difficile infection that occurred in a 40-year-old woman and a 47-year-old man. The literature review between 1976 (date of first reported case) and 2016 retrieved 54 observations (including our two cases). Reactive arthritis occurs most frequently in young subjects after a variable time frame according to C...
January 24, 2017: La Revue de Médecine Interne
https://www.readbyqxmd.com/read/28128856/experimental-arthritis-in-the-rat-induced-by-the-superantigen-staphylococcal-enterotoxin-a-sea
#9
Kristina Gerlach, Christian Tomuschat, Rainer Finke, Martin Sebastian Staege, Christine Brütting, Jörg Brandt, Berit Jordan, René Schwesig, Angela Rosemeier, Karl-Stefan Delank, Malte Erich Kornhuber, Alexander Emmer
The pathogenesis of rheumatoid arthritis (RA) is incompletely understood. Human endogenous retroviruses (HERVs) and their superantigenic envelope protein (env) have been implicated in the pathogenesis of RA. In the present investigation the arthritogenic potential of the superantigen Staphylococcal enterotoxin A (SEA) has been investigated. In the present investigation, the bacterial superantigen Staphylococcal enterotoxin A (SEA) was injected into the right knee joint of 15 Lewis rats. Further 9 animals received saline...
January 27, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28120605/hemophagocytic-lymphohistiocytosis-mimics-many-common-conditions-case-series-and-review-of-literature
#10
A T Akenroye, N Madan, F Mohammadi, J Leider
Introduction. Hemophagocytic lymphohistiocytosis (HLH), a rare but potentially fatal disease, is characterized by excessive immune activation and cytokine release which stimulates bone marrow macrophages to engulf hematopoietic cells. HLH could be secondary to infections: viral, fungal, and bacterial; malignancies and autoimmune diseases. The diagnosis of HLH is usually delayed due to the presence of non-specific symptoms at presentation. This delay contributes to increased mortality. Cases and review. We present the case of 4 patients who presented with subjective fevers and extreme fatigue...
January 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28109195/fungal-periprosthetic-joint-infection-following-total-elbow-arthroplasty-a-case-report-and-review-of-the-literature
#11
Cory A Kwong, Shannon K T Puloski, Kevin A Hildebrand
BACKGROUND: With improving surgical techniques for total elbow arthroplasty clinical outcomes have improved and its utilization continues to increase. Despite these advances, complication rates remain as high as 24%. Of these complications periprosthetic joint infection is one of the most common and morbid. The rheumatoid elbow remains a leading indication for total elbow arthroplasty. Patients with this condition frequently require immunosuppressive therapy, which places them at higher risk of both typical and atypical infections...
January 21, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28103685/an-effective-bacterial-fucosidase-for-glycoprotein-remodeling
#12
Tsung-I Tsai, Shiou-Ting Li, Chiu-Ping Liu, Karen Y Chen, Sachin S Shivatare, Chin-Wei Lin, Shih-Fen Liao, Chih-Wei Lin, Tsui-Ling Hsu, Ying-Ta Wu, Ming-Hung Tsai, Meng-Yu Lai, Nan-Horng Lin, Chung-Yi Wu, Chi-Huey Wong
Fucose is an important component of many oligo- and polysaccharide structures as well as glycoproteins and glycolipids, which are often associated with a variety of physiological processes ranging from fertilization, embryogenesis, signal transduction, and disease progression, such as rheumatoid arthritis, inflammation, and cancer. The enzyme α-l-fucosidase is involved in the cleavage of the fucosidic bond in glycans and glycoconjugates, particularly the Fuc-α-1,2-Gal, Fuc-α-1,3/4-GlcNAc, and Fuc-α-1,6-GlcNAc linkages...
20, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28081265/the-plasmin-sensitive-protein-pls-in-methicillin-resistant-staphylococcus-aureus-mrsa-is-a-glycoprotein
#13
Isabelle Bleiziffer, Julian Eikmeier, Gottfried Pohlentz, Kathryn McAulay, Guoqing Xia, Muzaffar Hussain, Andreas Peschel, Simon Foster, Georg Peters, Christine Heilmann
Most bacterial glycoproteins identified to date are virulence factors of pathogenic bacteria, i.e. adhesins and invasins. However, the impact of protein glycosylation on the major human pathogen Staphylococcus aureus remains incompletely understood. To study protein glycosylation in staphylococci, we analyzed lysostaphin lysates of methicillin-resistant Staphylococcus aureus (MRSA) strains by SDS-PAGE and subsequent periodic acid-Schiff's staining. We detected four (>300, ∼250, ∼165, and ∼120 kDa) and two (>300 and ∼175 kDa) glycosylated surface proteins with strain COL and strain 1061, respectively...
January 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28076897/microrna-expression-shows-inflammatory-dysregulation-and-tumor-like-proliferative-responses-in-joints-of-patients-with-post-infectious-lyme-arthritis
#14
Robert B Lochhead, Klemen Strle, Nancy D Kim, Minna J Kohler, Sheila L Arvikar, John M Aversa, Allen C Steere
OBJECTIVE: Lyme arthritis (LA) is caused by infection with Borrelia burgdorferi and usually resolves following spirochetal killing with antibiotics. However, in some patients, arthritis persists after antibiotic therapy. To provide insights into underlying pathogenic processes associated with post-infectious LA, we analyzed differences in microRNA expression between LA patients with active infection compared with those with post-infectious LA. METHODS: MicroRNA expression was assayed in synovial fluid (SF) from LA patients before and after oral and IV antibiotic therapy, and from synovial tissue from post-infectious LA patients obtained months after antibiotic therapy...
January 11, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28076516/septic-arthritis-of-the-knee-clinical-and-laboratory-comparison-of-groups-with-different-etiologies
#15
Camilo Partezani Helito, Paulo Renan Lima Teixeira, Priscila Rosalba de Oliveira, Vladimir Cordeiro de Carvalho, José Ricardo Pécora, Gilberto Luis Camanho, Marco Kawamura Demange, Ana Lucia Munhoz Lima
OBJECTIVES: To clinically and epidemiologically characterize a population diagnosed with and treated for septic arthritis of the knee, to evaluate the treatment results and to analyze the differences between patients with positive and negative culture results, patients with Gram-positive and Gram-negative bacterial isolates and patients with S. aureus- and non-S. aureus-related infections. METHODS: One hundred and five patients with septic knee arthritis were included in this study...
December 1, 2016: Clinics
https://www.readbyqxmd.com/read/28069819/temporal-role-for-myd88-in-a-model-of-brucella-induced-arthritis-and-musculoskeletal-inflammation
#16
Carolyn A Lacey, William J Mitchell, Charles R Brown, Jerod A Skyberg
Brucella spp. are facultative intracellular Gram-negative bacteria that cause the zoonotic disease brucellosis, one of the most common global zoonoses. Osteomyelitis, arthritis and musculoskeletal inflammation are common focal complications of brucellosis in humans; however, wild-type (WT) mice infected systemically with conventional doses of Brucella do not develop these complications. Here we report WT C57BL/6 mice infected via the footpad with 10(3)-10(6) CFUs of Brucella spp. display neutrophil and monocyte infiltration to the joint space and surrounding musculoskeletal tissue...
January 9, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28032700/management-of-acute-hematogenous-infection-following-total-knee-arthroplasty-a-case-series-of-11-patients
#17
Rui He, Liu Yang, Lin Guo, Hao Chen, Ying Zhang, Dian-Ming Jiang
OBJECTIVE: Acute hematogenous infection is a devastating complication that can occur after total knee arthroplasty (TKA). The best strategies for management of this infection remain controversial. Two-stage revision has been well described as the gold standard for the management of chronic late infections. However, there is a paucity of information presently available on the management and outcomes of patients treated for acute hematogenous infections. The purpose of the present study was to report the outcome of acute hematogenous infections following TKA with the treatment of irrigation, debridement, and retention of the prosthetic components...
November 2016: Orthopaedic Surgery
https://www.readbyqxmd.com/read/27974664/aggregatibacter-actinomycetemcomitans-induced-hypercitrullination-links-periodontal-infection-to-autoimmunity-in-rheumatoid-arthritis
#18
Maximilian F Konig, Loreto Abusleme, Jesper Reinholdt, Robert J Palmer, Ricardo P Teles, Kevon Sampson, Antony Rosen, Peter A Nigrovic, Jeremy Sokolove, Jon T Giles, Niki M Moutsopoulos, Felipe Andrade
A bacterial etiology of rheumatoid arthritis (RA) has been suspected since the beginnings of modern germ theory. Recent studies implicate mucosal surfaces as sites of disease initiation. The common occurrence of periodontal dysbiosis in RA suggests that oral pathogens may trigger the production of disease-specific autoantibodies and arthritis in susceptible individuals. We used mass spectrometry to define the microbial composition and antigenic repertoire of gingival crevicular fluid in patients with periodontal disease and healthy controls...
December 14, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27966012/-surface-replacement-of-proximal-interphalangeal-joints-using-capflex-pip
#19
S F Schindele, A Altwegg, S Hensler
OBJECTIVE OF SURGERY: The cementless implantation of the surface replacement CapFlex-PIP enables pain relief, preservation of motion, improves lateral stability and corrects axis deviation in proximal interphalangeal (PIP) joints of patients with primary and secondary PIP osteoarthritis. INDICATIONS: Painful PIP joints as a result of degenerative or posttraumatic osteoarthritis with restriction of motion. Secondary inflammatory destruction of PIP joints in rheumatoid arthritis with low inflammatory activity and good bone conditions...
February 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/27959965/functional-analyses-of-the-crohn-s-disease-risk-gene-lacc1
#20
Ghazaleh Assadi, Liselotte Vesterlund, Ferdinando Bonfiglio, Luca Mazzurana, Lina Cordeddu, Danika Schepis, Jenny Mjösberg, Sabrina Ruhrmann, Alessia Fabbri, Vladana Vukojevic, Piergiorgio Percipalle, Florian A Salomons, Jurga Laurencikiene, Leif Törkvist, Jonas Halfvarson, Mauro D'Amato
BACKGROUND: Genetic variation in the Laccase (multicopper oxidoreductase) domain-containing 1 (LACC1) gene has been shown to affect the risk of Crohn's disease, leprosy and, more recently, ulcerative colitis and juvenile idiopathic arthritis. LACC1 function appears to promote fatty-acid oxidation, with concomitant inflammasome activation, reactive oxygen species production, and anti-bacterial responses in macrophages. We sought to contribute to elucidating LACC1 biological function by extensive characterization of its expression in human tissues and cells, and through preliminary analyses of the regulatory mechanisms driving such expression...
2016: PloS One
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