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https://www.readbyqxmd.com/read/29330994/pattern-of-causative-micro-organisms-in-catheter-related-blood-stream-infections-in-dialysis-patients-experience-from-saudi-arabia
#1
Bilal Mohsin
BACKGROUND: Catheter related blood stream infections (CRBSI) are the leading cause of morbidity in HD patients. The majority of these infections relate to haemodialysis catheters. There is a paucity of local data on microbial agents responsible for CRBSI in our region. This prompted our study. METHODS: This Prospective observatory survey was conducted in Department of Nephrology, King Fahd Hospital, Hofuf KSA from Nov 2014 to Jan 2017 (26 months). It was performed on dialysis patients with HD catheters who developed features of CRBSI...
October 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29330927/defined-serum-free-medium-for-bioreactor-culture-of-an-immortalized-human-erythroblast-cell-line
#2
Esmond Lee, Zhong Ri Lim, Hong Yu-Chen, Bin Xia Yang, Alan Tin-Lun Lam, Allen Kuan-Liang Chen, Jaichandran Sivalingam, Shaul Reuveny, Yuin-Han Loh, Steve Kah-Weng Oh
Anticipated shortages in donated blood supply have prompted investigation of alternative approaches for in-vitro production of red blood cells (RBCs), such as expansion of conditional immortalization erythroid progenitors. However, there is a bioprocessing challenge wherein factors promoting maximal cell expansion and growth-limiting inhibitory factors are yet to be investigated. We used an erythroblast cell line (ImEry) derived from immortalizing CD71+CD235a+ erythroblast from adult peripheral blood for optimization of expansion culture conditions...
January 13, 2018: Biotechnology Journal
https://www.readbyqxmd.com/read/29330675/recognizing-conserved-non-canonical-localization-patterns-of-toll-like-receptors-in-tissues-and-across-species
#3
REVIEW
Glenn Hamonic, J Alex Pasternak, Heather L Wilson
Toll-like receptors (TLR) 1, 2, 4, 5 and 6 were originally characterized as exclusively expressed on the cell surface and TLR 3, 7, 8 and 9 were said to be localized to the endosomes. However, continued research in this area shows that TLR localization may be altered across cell-types, and in response to stimulation, age or disease. Mucosal surfaces must remain tolerant to the commensal flora and thus intracellular or basal lateral localization of TLRs at mucosal surfaces may be necessary to prevent induction of an inflammatory response to commensal flora while still allowing the possibility for the receptors to prime an immune response when a pathogen has crossed the epithelial barrier...
January 12, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29330406/adjuvant-role-of-septifast-to-improve-the-diagnosis-of-sepsis-in-a-large-cohort-of-hematological-patients
#4
Raffaella Greco, Maria Chiara Barbanti, Nicasio Mancini, Lara Crucitti, Chiara Oltolini, Alessandra Forcina, Francesca Lorentino, Luca Vago, Carlo Messina, Daniela Clerici, Mara Morelli, Fabio Giglio, Maria Teresa Lupo Stanghellini, Laura Infurnari, Matteo G Carrabba, Sarah Marktel, Andrea Assanelli, Paolo Scarpellini, Massimo Bernardi, Jacopo Peccatori, Consuelo Corti, Massimo Clementi, Fabio Ciceri
Febrile neutropenia and sepsis are common and life-threatening complications in hematological diseases. This study was performed retrospectively in 514 patients treated for febrile neutropenia at our institute, to investigate the clinical usefulness of a molecular tool, LightCycler® SeptiFast test (SF), to promptly recognize pathogens causing sepsis in hematological patients. We collected 1837 blood samples of 514 consecutive hematological patients. The time of processing is short. Overall, 757 microorganisms in 663 episodes were detected by molecular test and standard blood cultures (BC): 73...
January 12, 2018: Bone Marrow Transplantation
https://www.readbyqxmd.com/read/29329925/phenotypic-and-molecular-characterisation-of-a-serum-free-miniature-erythroid-differentiation-system-suitable-for-high-throughput-screening-and-single-cell-assays
#5
Sachith Mettananda, Kevin Clark, Chris A Fisher, Jackie A Sloane-Stanley, Richard J Gibbons, Douglas R Higgs
In vitro erythroid differentiation systems are used to study the mechanisms underlying normal and abnormal erythropoiesis and to test the effects of various extracellular factors on erythropoiesis. The use of serum or conditioned medium in liquid cultures, and seeding cultures with heterogeneous peripheral blood mononuclear cells confound the reproducibility of these systems. Newer erythroid differentiation culture systems have overcome some of these limitations by using a fully defined, serum-free, medium and initiating cultures using purified CD34+ cells...
January 9, 2018: Experimental Hematology
https://www.readbyqxmd.com/read/29329519/eikenella-corrodens-endocarditis-and-liver-abscess-in-a-previously-healthy-male-a-case-report
#6
Anne Christine Nordholm, Ruth Ottilia Birgitta Vøgg, Henrik Permin, Terese Katzenstein
BACKGROUND: Eikenella corrodens is one of the HACEK bacteria constituting part of the normal flora of the oropharynx, however, still an uncommon pathogen. We report a case of a large Eikenella corrodens liver abscess with simultaneously endocarditis in a previously healthy male. CASE PRESENTATION: A 49-year-old Danish man was admitted because of one-month malaise, fever, cough and unintentional weight loss. On admission there was elevated white blood cell count and C-reactive protein, as well as affected liver function tests...
January 12, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29329518/the-use-of-eculizumab-in-gemcitabine-induced-thrombotic-microangiopathy
#7
Vinod Krishnappa, Mohit Gupta, Haikoo Shah, Abhijit Das, Natthavat Tanphaichitr, Robert Novak, Rupesh Raina
BACKGROUND: Thrombotic microangiopathy (TMA) secondary to gemcitabine therapy (GiTMA) is a very rare pathology that carries a poor prognosis, with nearly half of the cases progressing to end stage renal disease. GiTMA is most commonly associated with adenocarcinomas, most notably pancreatic cancers. The mainstay of management is withdrawal of the offending drug and supportive care. Plasmapheresis has a limited role and hemodialysis may help in the management of fluid overload secondary to renal failure...
January 12, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29329397/minar1-is-a-notch2-binding-protein-that-inhibits-angiogenesis-and-breast-cancer-growth
#8
Rachel Xi-Yeen Ho, Rosana D Meyer, Kevin B Chandler, Esma Ersoy, Michael Park, Philip A Bondzie, Nima Rahimi, Huihong Xu, Catherine E Costello, Nader Rahimi
Intrinsically disordered proteins (IDPs)/intrinsically unstructured proteins (IUPs) are characterized by the lack of fixed or stable tertiary structure, and are increasingly recognized as an important class of proteins with major roles in signal transduction and transcriptional regulation. In this study, we report the identification and functional characterization of a previously uncharacterized protein (UPF0258/KIAA1024), major intrinsically disordered Notch2-associated receptor 1 (MINAR1). While MINAR1 carries a single transmembrane domain and a short cytoplasmic domain, it has a large extracellular domain that shares no similarity with known protein sequences...
January 10, 2018: Journal of Molecular Cell Biology
https://www.readbyqxmd.com/read/29329166/hematologic-manifestations-of-brucellosis-in-children
#9
Naphtali Justman, Yariv Fruchtman, David Greenberg, Ben-Shimol Shalom
BACKGROUND: Brucellosis is a common zoonosis in the Bedouin population of southern Israel. Limited data exist for the rate and risk factors of hematologic complication of brucellosis in children. We assessed anemia, leukopenia, thrombocytopenia and pancytopenia in childhood brucellosis in southern Israel. METHODS: Our medical center is the sole hospital in southern-Israel. All medical files of brucellosis, 2005-2014, identified through positive blood cultures or International Classification of Diseases 9 revision (ICD9) coding with positive serology, were reviewed retrospectively...
January 11, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29328541/gm-csf-ameliorates-micro-vascular-barrier-integrity-via-pericytes-derived-ang-1-in-wound-healing
#10
Min Yan, Yange Hu, Min Yao, Shisan Bao, Yong Fang
BACKGROUND: Skin wound healing involves complex coordinated interactions of cells, tissues and mediators. Maintaining microvascular barrier integrity is one of the key events for endothelial homeostasis during wound healing. Vasodilation is observed after vasoconstriction, which causes blood vessels to become porous, facilitates leukocyte infiltration and aids angiogenesis at the wound-area, post-injury. Eventually, vessel integrity has to be re-established for vascular maturation. Numerous studies have found that granulocyte macrophage colony-stimulating factor (GM-CSF) accelerates wound healing by inducing recruitment of repair cells into the injury area and releases of cytokines...
January 12, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29328066/a-british-ophthalmological-surveillance-unit-study-on-metastatic-endogenous-endophthalmitis
#11
S Maling, C King, N Davies
PurposeEndogenous endophthalmitis (EE) is a rare but serious ocular infection caused by the seeding of bacteria into the eye from a source elsewhere in the body. Studies suggest that EE accounts for 2 to 8% of all endophthalmitis.MethodsA prospective observational study was conducted using the British Ophthalmological Surveillance Unit reporting system. Questionnaires were sent to reporting Ophthalmologists in the UK to assess incidence, underlying aetiology, eye findings, management, and final outcomes in endogenous endophthalmitis over a 12-month period within the British Isles...
January 12, 2018: Eye
https://www.readbyqxmd.com/read/29327963/antemortem-diagnosis-of-coxiellosis-in-a-blue-and-gold-macaw-ara-ararauna
#12
Alison J Flanders, Justin F Rosenberg, Marjorie Bercier, Mary K Leissinger, Laura J Black, Robson F Giglio, Serena L M Craft, Whitney M Zoll, April L Childress, James F X Wellehan
A 15-year-old female blue and gold macaw ( Ara ararauna) was presented for evaluation after being found laterally recumbent, reluctant to move, and lethargic. Results of a complete blood count showed an increased number of immature heterophils with increased cytoplasmic basophilia and degranulation and the presence of a left shift. Radiographs and a computed tomography scan were performed and revealed a markedly enlarged spleen. An ultrasound-guided fine-needle aspirate of the spleen was submitted for cytologic examination and aerobic bacterial culture...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29327677/autologous-smooth-muscle-progenitor-cells-enhance-regeneration-of-tissue-engineered-bladder
#13
Liuhua Zhou, Jiadong Xia, Pengji Wang, Ruipeng Jia, Jun Hua Zheng, Xudong Yao, Yun Chen, Yutian Dai, Bin Yang
Tissue engineering techniques provide a great potential to de novo construct a histological bladder. Smooth muscle regeneration is extremely important for the functional recovery of engineered neo-bladder. However, many challenges remain for the use of bladder smooth muscle cells (SMCs) as the cell sources. Recent evidences showed that smooth muscle progenitor cells (SPCs) in the peripheral blood have the capacity of differentiating into SMCs, while their use for bladder regeneration hasn't yet been reported...
January 12, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29327210/paired-blood-cultures-increase-the-sensitivity-for-detecting-pathogens-in-both-inpatients-and-outpatients
#14
Bansidhar Tarai, Dinesh Jain, Poonam Das, Sandeeep Budhiraja
The objective of this study was to show the differences between paired blood cultures (PBC) versus single blood cultures (SBC) in the microbiologic yield, the sensitivity to detect pathogens and the time to positivity (TTP). We performed a retrospective study examining 112,570 blood culture samples over a 5-year period from July 2011 to May 2016 in the BacT/ALERT® 3D automated blood culture system (bioMérieux, Marcy l'Etoile, France). Bacteria and yeasts were identified using the VITEK® 2 Compact system (bioMérieux, Marcy l'Etoile, France)...
January 11, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29327203/loss-of-cx43-mediated-functional-gap-junction-communication-in-meningeal-fibroblasts-following-mouse-hepatitis-virus-infection
#15
Abhishek Bose, Rahul Basu, Mahua Maulik, Jayasri Das Sarma
Mouse hepatitis virus (MHV) infection causes meningoencephalitis by disrupting the neuro-glial and glial-pial homeostasis. Recent studies suggest that MHV infection alters gap junction protein connexin 43 (Cx43)-mediated intercellular communication in brain and primary cultured astrocytes. In addition to astrocytes, meningeal fibroblasts also express high levels of Cx43. Fibroblasts in the meninges together with the basal lamina and the astrocyte endfeet forms the glial limitans superficialis as part of the blood-brain barrier (BBB)...
January 11, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29327082/evaluation-of-committed-and-primitive-cord-blood-progenitors-after-expansion-on-adipose-stromal-cells
#16
E R Andreeva, I V Andrianova, A N Gornostaeva, B Sh Gogiya, L B Buravkova
Umbilical cord blood mononuclear fraction is a valuable source of hematopoietic stem and progenitor cells (CB HSPCs). The rarity of this population is a serious limitation of its application in cell therapy. Ex vivo expansion enables to significantly amplify the number of hematopoietic precursors of different commitment. Here, we expand CB MNCs in co-culture with human adipose tissue-derived stromal cells (ASCs) to enrich HSPCs and describe phenotypic features of newly formed hematopoietic populations. The CD34+-HSPCs demonstrated 6-fold enrichment with 9000 CFUs per 50 × 103 HSPCs on average...
January 11, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29326990/a-fluorescent-microbead-based-microfluidic-immunoassay-chip-for-immune-cell-cytokine-secretion-quantification
#17
Xin Cui, Ya Liu, Dinglong Hu, Weiyi Qian, Chung Tin, Dong Sun, Weiqiang Chen, Raymond H W Lam
Quantitative and dynamic analyses of immune cell secretory cytokines are essential for precise determination and characterization of the "immune phenotype" of patients for clinical diagnosis and treatment of immune-related diseases. Although multiple methods including the enzyme-linked immunosorbent assay (ELISA) have been applied for cytokine detection, such measurements remain very challenging in real-time, high-throughput, and high-sensitivity immune cell analysis. In this paper, we report a highly integrated microfluidic device that allows for on-chip isolation, culture, and stimulation, as well as sensitive and dynamic cytokine profiling of immune cells...
January 12, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29325951/shunt-nephritis-an-increasingly-unfamiliar-diagnosis
#18
Tessa A Harland, Ken R Winston, Anna J Jovanovich, Richard J Johnson
BACKGROUND: Shunt nephritis is a rare, reversible immune-complex mediated complication of CSF shunt infection that can progress to end-stage renal disease and even death if diagnosis is delayed. CASE DESCRIPTION: The present case report details the manifestation and clinical course of shunt nephritis in a 50-year old patient who presented with symptoms of nephrotic syndrome 30 years after ventriculo-jugular shunt placement. Diagnosis was delayed due to initial negative CSF and blood cultures but later a CSF culture was positive for Propionibacterium acnes...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29325218/equal-candida-score-an-ecmm-score-derived-from-current-guidelines-to-measure-quality-of-clinical-candidemia-management
#19
Sibylle C Mellinghoff, Martin Hoenigl, Philipp Koehler, Anil Kumar, Katrien Lagrou, Cornelia Lass-Flörl, Jacques F Meis, Vidya Menon, Riina Rautemaa-Richardson, Oliver A Cornely
Candida species frequently cause blood stream infections and are reported to be the third to tenth most commonly isolated pathogens. Guidelines and standardized treatment algorithms provided by professional organisations aim to facilitate decision-making regarding diagnosis, management, and treatment of candidemia. In routine clinical practise, however, it may be challenging to comply with these guidelines. The reasons include lack of familiarity or feasibility to adherence, but also their length and complexity...
January 11, 2018: Mycoses
https://www.readbyqxmd.com/read/29325127/inhibiting-trophoblast-par-1-overexpression-suppresses-sflt-1-induced-anti-angiogenesis-and-abnormal-vascular-remodeling-a-possible-therapeutic-approach-for-preeclampsia
#20
Yin Zhao, YanFang Zheng, XiaoXia Liu, QingQing Luo, Di Wu, XiaoPing Liu, Li Zou
STUDY QUESTION: Is it possible to improve vascular remodeling by inhibiting the excessive expression of protease activated receptor 1 (PAR-1) in trophoblast of abnormal placenta? SUMMARY ANSWER: Inhibition of trophoblast PAR-1 overexpression may promote placental angiogenesis and vascular remodeling, offering an alternative therapeutic approach for preeclampsia. WHAT IS KNOWN ALREADY: PAR-1 is high-affinity receptor of thrombin. Thrombin increases sFlt-1 secretion in trophoblast via the activation of PAR-1...
January 9, 2018: Molecular Human Reproduction
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