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https://www.readbyqxmd.com/read/27933619/monocyte-mediated-activation-of-endothelial-cells-occurs-only-after-binding-to-extracellular-vesicles-from-red-blood-cell-products-a-process-mediated-by-%C3%AE-integrin
#1
Marleen Straat, Maike E van Hezel, Anita Böing, Anita Tuip-De Boer, Nina Weber, Rienk Nieuwland, Robin van Bruggen, Nicole P Juffermans
BACKGROUND: Red blood cell (RBC) transfusion is associated with organ failure. The mechanism remains unknown, but may include adherence of blood cells to the microvasculature. We hypothesized that RBC-derived extracellular vesicles (EVs) interact with monocytes to activate endothelial cells. STUDY DESIGN AND METHODS: Human umbilical vein endothelial cells were incubated with supernatant from fresh and stored RBC units either containing EVs or depleted from EVs, with or without the addition of immune cells...
December 2016: Transfusion
https://www.readbyqxmd.com/read/27933250/clinical-analysis-on-430-cases-of-infantile-purulent-meningitis
#2
Zhihui He, Xiujuan Li, Li Jiang
BACKGROUND: Purulent meningitis (PM) usually caused by a variety of pyogenic infection, is a kind of central nervous system infectious disease mostly common in children. It is easily misdiagnosed and its symptoms are varied. Excessive application of broad-spectrum antibiotics results in increased sickness and death of infants and young children. In this study, clinical data of 430 cases of PM in infants were analyzed to summarize the clinical experiences so as to achieve early diagnosis and early treatment of PM...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27933059/formation-of-neutrophil-extracellular-traps-under-low-oxygen-level
#3
Katja Branitzki-Heinemann, Helene Möllerherm, Lena Völlger, Diab M Husein, Nicole de Buhr, Stefanie Blodkamp, Friederike Reuner, Graham Brogden, Hassan Y Naim, Maren von Köckritz-Blickwede
Since their discovery, neutrophil extracellular traps (NETs) have been characterized as a fundamental host innate immune defense mechanism. Conversely, excessive NET-release may have a variety of detrimental consequences for the host. A fine balance between NET formation and elimination is necessary to sustain a protective effect during an infectious challenge. Our own recently published data revealed that stabilization of hypoxia-inducible factor 1α (HIF-1α) by the iron chelating HIF-1α-agonist desferoxamine or AKB-4924 enhanced the release of phagocyte extracellular traps...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27932680/trans-spinal-direct-current-stimulation-modulates-migration-and-proliferation-of-adult-newly-born-spinal-cells-in-mice
#4
Sreyashi Samaddar, Kizzy Vazquez, Dipen Ponika, Pedro Toruno, Karim Sahbani, Sultana Begum, Ahmed Abouelela, Wagdy Mekhael, Zaghloul Ahmed
Direct current electrical fields have been shown to be a major factor in the regulation of cell proliferation, differentiation, migration, and survival, as well as in the maturation of dividing cells during development. During adulthood, spinal cord cells are continuously produced in both animals and humans, and they hold great potential for neural restoration following spinal cord injury. While the effects of direct current electrical fields on adult-born spinal cells cultured ex vivo have recently been reported, the effects of direct current electrical fields on adult-born spinal cells in vivo have not been characterized...
December 8, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27932242/elevated-salivary-iga-decreased-anxiety-and-an-altered-oral-microbiota-are-associated-with-active-participation-on-an-undergraduate-athletic-team
#5
Ashley L Lamb, Debra E Hess, Sherie Edenborn, Elizabeth Ubinger, Andres E Carrillo, Pierette M Appasamy
BACKGROUND: Previous reports indicate that regular, but not excessive, exercise can moderate the response to anxiety and alter the immune response, therefore we hypothesized that college student athletes who were actively participating on an NCAA Division III athletics team ("in-season") would have lower levels of anxiety and higher salivary IgA levels than similar college athletes who were in their "off-season".NCAA Division III athletes participate in athletics at a level of intensity that is more moderate compared to other NCAA divisions...
December 5, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27932159/fulminant-clostridium-perfringens-sepsis-in-kidney-transplant-a-case-report
#6
P Mihaylov, J A Powelson, W C Goggins
BACKGROUND: Infections, particularly urinary tract infections, and cardiovascular accidents are the main causes of morbidity and mortality during the 1st year after kidney transplantation (KT). Bacteria and viruses, such as Escherichia coli, Enteroccoci, and Polyoma BK virus are common in the 1st 6 months, so they are controlled routinely. On the other hand, Clostridium perfringens infection is a rare life-threatening condition, associated with a high mortality rate especially in the transplant population, that is not controlled routinely...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932144/inhibition-of-jak3-and-pkc-via-immunosuppressive-drugs-tofacitinib-and-sotrastaurin-inhibits-proliferation-of-human-b-lymphocytes-in%C3%A2-vitro
#7
M N Martina, M J Ramirez Bajo, E Bañon-Maneus, D Moya Rull, N Hierro-Garcia, I Revuelta, J M Campistol, J Rovira, F Diekmann
BACKGROUND: Antibody-mediated response in solid organ transplantation is critical for graft dysfunction and loss. The use of immunosuppressive agents partially inhibits the B-lymphocyte response leading to a risk of acute and chronic antibody-mediated rejection. This study evaluated the impact of JAK3 and PKC inhibitors tofacitinib (Tofa) and sotrastaurin (STN), respectively, on B-cell proliferation, apoptosis, and activation in vitro. METHODS: Human B cells isolated from peripheral blood of healthy volunteers were cocultured with CD40 ligand-transfected fibroblasts as feeder cells in the presence of interleukin (IL) 2, IL-10, and IL-21...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27932084/a-novel-method-for-the-rapid-detection-of-microbes-in-blood-using-pleurocidin-antimicrobial-peptide-functionalized-piezoelectric-sensor
#8
Xiaohong Shi, Xiaoqing Zhang, Qiongqiong Yao, Fengjiao He
The rapid detection of microbes is critical in clinical diagnosis and food safety. Culture-dependent assays are the most widely used microbial detection methods, but these assays are time-consuming. In this study, a rapid microbial detection method was proposed using a pleurocidin/single-walled carbon nanotubes/interdigital electrode-multichannel series piezoelectric quartz crystal (pleurocidin/SWCNT/IDE-MSPQC) sensor. The selected pleurocidin antimicrobial peptide served as a recognition probe that exhibits broad-spectrum antimicrobial activity and the SWCNT acted as the electronic transducer and cross-linker for the immobilization of pleurocidin on the IDE...
December 5, 2016: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/27931742/schistosoma-mansoni-antigens-alter-activation-markers-and-cytokine-profile-in-lymphocytes-of-patients-with-asthma
#9
Tarcísio Vila Verde Santana de Almeida, Jamille Souza Fernandes, Diego Mota Lopes, Lorena Santana Andrade, Sérgio Costa Oliveira, Edgar M Carvalho, Maria Ilma Araujo, Álvaro A Cruz, Luciana Santos Cardoso
: Asthma is a chronic disease characterized by airway inflammation, obstruction and hyperresponsiveness. Severe asthma affects a small proportion of subjects but results in most of the morbidity, costs and mortality associated with the disease. Studies have suggested that Schistosoma mansoni infection reduces the severity of asthma and prevent atopy. OBJECTIVE: We evaluated the ability of S. mansoni antigens, Sm29 and Sm29TSP-2 to modulate lymphocyte activation status in response to the allergen of the mite Dermatophagoides pteronyssinus (Der p1) in cell cultures of individuals with asthma...
December 5, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27931193/coagulase-negative-staphylococcal-sepsis-in-neonates-do-we-need-to-adapt-vancomycin-dose-or-target
#10
Helgi Padari, Kersti Oselin, Tõnis Tasa, Tuuli Metsvaht, Krista Lõivukene, Irja Lutsar
BACKGROUND: Despite differences in types of infection and causative organisms, pharmacokinetic-pharmacodynamic (PKPD) targets of vancomycin therapy derived from adult studies are suggested for neonates. We aimed to identify doses needed for the attainment of AUC/MIC > 400 and AUC/MIC > 300 in neonates with sepsis and correlate these targets with recommended doses and treatment outcome. METHODS: Neonates who had Vancomycin therapeutic drug monitoring (TDM) performed between January 1, 2010 and December 31, 2012 were studied...
December 8, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27930920/indoleamine-2-3-dioxygenase-regulates-t-cell-activity-through-vav1-rac-pathway
#11
Runmei Li, Hui Li, Qian Sun, Liang Liu, Chen Zhang, Xiubao Ren
The immunoregulatory enzyme indoleamine 2,3-dioxygenase (IDO) suppresses T-cell responses and promotes immune tolerance in tumor resistance. A previous study determined that IDO inhibits Vav1 mRNA expression and the activation of Vav1 and its downstream targets in T cells in the guanine exchange factor (GEF)-independent pathway. The current study aims to determine whether IDO induces T-cell immunosuppression through Vav1/Rac signaling pathway, which is a GEF-dependent pathway. The correlation between Vav1 mRNA expressions in T cells of tumor infiltrating lymphocytes and the levels of IDO expression in lung cancer tissues from lung cancer patients was detected...
December 5, 2016: Molecular Immunology
https://www.readbyqxmd.com/read/27930745/the-ebola-interferon-inhibiting-domains-attenuate-and-dysregulate-cell-mediated-immune-responses
#12
Ndongala Michel Lubaki, Patrick Younan, Rodrigo I Santos, Michelle Meyer, Mathieu Iampietro, Richard A Koup, Alexander Bukreyev
Ebola virus (EBOV) infections are characterized by deficient T-lymphocyte responses, T-lymphocyte apoptosis and lymphopenia. We previously showed that disabling of interferon-inhibiting domains (IIDs) in the VP24 and VP35 proteins effectively unblocks maturation of dendritic cells (DCs) and increases the secretion of cytokines and chemokines. Here, we investigated the role of IIDs in adaptive and innate cell-mediated responses using recombinant viruses carrying point mutations, which disabled IIDs in VP24 (EBOV/VP24m), VP35 (EBOV/VP35m) or both (EBOV/VP35m/VP24m)...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27930596/systemic-inflammatory-response-syndrome-is-more-associated-with-bacteremia-in-elderly-patients-with-suspected-sepsis-in-emergency-departments
#13
Hsien-Ling Chou, Shih-Tsung Han, Chun-Fu Yeh, I-Shaing Tzeng, Tsung-Han Hsieh, Chin-Chieh Wu, Jen-Tse Kuan, Kuan-Fu Chen
Early diagnosis of bacteremia for patients with suspected sepsis is 1 way to improve prognosis of sepsis. Systemic inflammatory response syndrome (SIRS) has long been utilized as a screening tool to detect bacteremia by front-line healthcare providers. The value of SIRS to predict bacteremia in elderly patients (≥65 years) with suspected sepsis has not yet been examined in emergency departments (EDs).We aimed to evaluate the performance of SIRS components in predicting bacteremia among elderly patients in EDs...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27930540/invasive-bacterial-infections-in-gambians-with-sickle-cell-anemia-in-an-era-of-widespread-pneumococcal-and-hemophilus-influenzae-type-b-vaccination
#14
Germander Soothill, Saffiatou Darboe, Gibril Bah, Lawal Bolarinde, Aubrey Cunnington, Suzanne T Anderson
There is relatively little data on the etiology of bacterial infections in patients with sickle cell anemia (SCA) in West Africa, and no data from countries that have implemented conjugate vaccines against both Streptococcus pneumoniae and Haemophilus influenzae type b (Hib).We conducted a retrospective analysis of SCA patients admitted to the Medical Research Council Unit, The Gambia, during a 5-year period when there was high coverage of Hib and Pneumococcal conjugate vaccination. We evaluated 161 admissions of 126 patients between April 2010 and April 2015...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27930527/feasibility-of-radiofrequency-ablation-as-an-alternative-to-surgical-intervention-in-patients-with-huge-multiloculated-pyogenic-liver-abscesses-a-retrospective-cohort-study
#15
Shan Ke, Xue-Mei Ding, Jun Gao, Shao-Hong Wang, Jian Kong, Li Xu, Wen-Bing Sun
This retrospective cohort study investigated the feasibility of radiofrequency (RF) ablation as an alternative to surgical intervention in patients with huge multiloculated pyogenic liver abscesses (PLAs).From August 2010 to April 2016, 83 patients with PLA were admitted to Beijing Chao-Yang Hospital, China. Four of these patients had huge multiloculated PLAs and underwent RF ablation plus antibiotics. The inclusion criteria for RF ablation were as follows: multiloculated PLA confirmed by computed tomography (CT) or magnetic resonance imaging (MRI), widest diameter of the PLA ≥5 cm, failure to respond to or not suitable to treatment with percutaneous drainage (PD), and patient refusal of surgery...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27928186/implementation-of-a-pharmacist-directed-antimicrobial-stewardship-protocol-utilizing-rapid-diagnostic-testing
#16
Angel Heyerly, Ron Jones, Gordon Bokhart, Mary Shoaff, Douglas Fisher
Background: Rapid identification of gram-positive bacteria and resistance determinants from blood cultures can reduce the time to optimal antibiotic therapy. Objective: This study evaluates the use of technology to rapidly identify gram-positive bacteria in combination with a pharmacist-directed antimicrobial stewardship protocol in a tertiary-care facility. Methods: Rapid diagnostic testing was performed on gram-positive blood cultures. Pharmacists were instructed to notify prescribers of results and recommend appropriate antimicrobial therapy based on targeted treatment chart...
November 2016: Hospital Pharmacy
https://www.readbyqxmd.com/read/27927881/brain-abscess-due-to-listeria-monocytogenes-after-hellp-syndrome-in-a-patient-with-antiphospholipid-syndrome
#17
A Fervienza, M Bodro, P Castro, S Hernández, I Teixidó, G Espinosa, R Cervera
OBJECTIVE: To illustrate an unusual case of Listeria cerebral abscess. MATERIAL AND METHODS: A 32-year-old pregnant woman with thrombotic antiphospholipid syndrome (APS) received corticotherapy for two weeks due to hemolysis, elevated liver enzymes, low platelet (HELLP) syndrome. After delivery she presented with neurological symptoms and fever. RESULTS: The MRI scan confirmed the presence of a brain abscess, and Listeria monocytogenes was isolated in blood cultures...
December 6, 2016: Lupus
https://www.readbyqxmd.com/read/27927849/the-effect-of-serum-vitamin-d-levels-on-ovarian-reserve-markers-a-prospective-cross-sectional-study
#18
Panagiotis Drakopoulos, Arne van de Vijver, Valerie Schutyser, Stevan Milatovic, Ellen Anckaert, Johan Schiettecatte, Christophe Blockeel, Michel Camus, Herman Tournaye, Nikolaos P Polyzos
STUDY QUESTION: Is there any association between serum 25-OH vitamin D levels and ovarian reserve markers in infertile women? SUMMARY ANSWER: Vitamin D is not associated with the ovarian reserve markers, anti-mullerian hormone (AMH) and antral follicle count (AFC), in infertile women. WHAT IS KNOWN ALREADY: The mechanism underlying the relationship between vitamin D deficiency and reproduction is still unclear; however, evidence indicates a potential direct negative impact on ovarian function...
December 6, 2016: Human Reproduction
https://www.readbyqxmd.com/read/27927653/knockdown-of-add3-impairs-the-myogenic-response-of-renal-afferent-arterioles-and-middle-cerebral-arteries
#19
Fan Fan, Mallikarjuna R Pabbidi, Ying Ge, Longyang Li, Shaoxun Wang, Paige N Mims, Richard J Roman
We have reported that the myogenic response of the renal afferent arteriole (Af-art) and middle cerebral artery (MCA), and autoregulation of renal and cerebral blood flow are impaired in Fawn Hood Hypertensive (FHH) rats. Transfer of a region of chromosome 1 containing gamma-adducin (Add3) from Brown Norway rats rescues the vascular dysfunction and the development of renal disease. To examine whether Add3 is a viable candidate gene altering renal and cerebral hemodynamics in FHH rats, we knocked down the expression of Add3 in rat Af-art and MCA cultured for 36-hours using a 27-mer Dicer-substrate short interfering RNA (DsiRNA)...
December 7, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/27927231/identification-of-a-potent-small-molecule-capable-of-regulating-polyploidization-megakaryocyte-maturation-and-platelet-production
#20
Nick Huang, Mabel Lou, Hua Liu, Cecilia Avila, Yupo Ma
BACKGROUND: Megakaryocytic cell maturation involves polyploidization, and megakaryocyte (MK) ploidy correlates with their maturation and platelet production. Retardation of MK maturation is closely associated with poor MK engraftment after cord blood transplantation and neonatal thrombocytopenia. Despite the high prevalence of thrombocytopenia in a range of setting that affect infants to adults, there are still very limited modalities of treatment. METHODS: Human CD34(+) cells were isolated from cord blood or bone marrow samples acquired from consenting patients...
December 8, 2016: Journal of Hematology & Oncology
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