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https://www.readbyqxmd.com/read/28634352/differences-in-sequences-between-hbv-relaxed-circular-dna-and-covalently-closed-circular-dna
#1
Magda Rybicka, Anna Woziwodzka, Tomasz Romanowski, Piotr Stalke, Marcin Dręczewski, Krzysztof Piotr Bielawski
The hepatitis B virus (HBV) genome exists in two forms: circular covalently closed DNA (cccDNA) and relaxed circular DNA (RCDNA). Here, we investigated the presence of differences in the sequences of both forms in paired samples of serum and liver tissue. The serum and liver biopsy samples were collected at the same time from 67 chronically infected patients. The genotyping of the RCDNA and cccDNA was performed using mass spectrometry analysis. The HBV mutations located in the HBV pol (P) and the HBV basal core promoter/pre-core (BCP/PC) regions were included...
June 21, 2017: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/28634105/genetic-diversity-in-the-c-terminus-of-merozoite-surface-protein-1-among-plasmodium-knowlesi-isolates-from-selangor-and-sabah-borneo-malaysia
#2
Nan Jiun Yap, Xiang Ting Goh, Anson V Koehler, Timothy William, Tsin Wen Yeo, Indra Vythilingam, Robin B Gasser, Yvonne A L Lim
Plasmodium knowlesi, a malaria parasite of macaques, has emerged as an important parasite of humans. Despite the significance of P. knowlesi malaria in parts of Southeast Asia, very little is known about the genetic variation in this parasite. Our aim here was to explore sequence variation in a molecule called the 42kDa merozoite surface protein-1 (MSP-1), which is found on the surface of blood stages of Plasmodium spp. and plays a key role in erythrocyte invasion. Several studies of P. falciparum have reported that the C-terminus (a 42kDa fragment) of merozoite surface protein-1 (MSP-142; consisting of MSP-119 and MSP-133) is a potential candidate for a malaria vaccine...
June 17, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28633205/advancing-the-science-of-myocardial-recovery-with-mechanical-circulatory-support-a-working-group-of-the-national-heart-lung-and-blood-institute
#3
EDITORIAL
Stavros G Drakos, Francis D Pagani, Martha S Lundberg, Timothy J Baldwin
The medical burden of heart failure (HF) has spurred interest in clinicians and scientists to develop therapies to restore the function of a failing heart. To advance this agenda, the National Heart, Lung, and Blood Institute (NHLBI) convened a Working Group of experts from June 2 to 3, 2016, in Bethesda, Maryland, to develop NHLBI recommendations aimed at advancing the science of cardiac recovery in the setting of mechanical circulatory support (MCS). MCS devices effectively reduce volume and pressure overload that drives the cycle of progressive myocardial dysfunction, thereby triggering structural and functional reverse remodeling...
July 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28633147/tranexamic-acid-safely-reduced-blood-loss-in-hemi-and-total-hip-arthroplasty-for-acute-femoral-neck-fracture-a-randomized-clinical-trial
#4
Chad D Watts, Matthew T Houdek, S Andrew Sems, William W Cross, Mark W Pagnano
OBJECTIVES: We aimed to determine whether (1) tranexamic acid (TXA) reduces the incidence of transfusion (2) TXA reduces the calculated blood loss, and (3) there are any observable differences in 30- and 90-day complications with TXA administration during arthroplasty for femoral neck fracture (FNF). DESIGN: Prospective, double-blinded, randomized controlled trial. SETTING: Level 1 Academic Trauma Center. PATIENTS/PARTICIPANTS: One hundred thirty-eight patients who presented with a low-energy, isolated, FNF (AO 31B) treated with either hemi- or total hip arthroplasty within 72 hours of injury were randomized to either the TXA group (69 patients) or placebo group (69 patients)...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28632435/relative-effects-of-plasma-fibrinogen-concentrate-and-factor-xiii-on-rotem-coagulation-profiles-in-an-in-vitro-model-of-massive-transfusion-in-trauma
#5
David E Schmidt, Märit Halmin, Agneta Wikman, Anders Östlund, Anna Ågren
Massive traumatic haemorrhage is aggravated through the development of trauma-induced coagulopathy, which is managed by plasma transfusion and/or fibrinogen concentrate administration. It is yet unclear whether these treatments are equally potent in ensuring adequate haemostasis, and whether additional factor XIII (FXIII) administration provides further benefits. In this study, we compared ROTEM whole blood coagulation profiles after experimental massive transfusion with different transfusion regimens in an in vitro model of dilution- and transfusion-related coagulopathy...
June 20, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28631330/foxo-transcription-factors-at-the-interface-of-metabolism-and-cancer
#6
REVIEW
Wolfgang Link, Pablo J Fernandez-Marcos
Diabetes refers to a group of metabolic diseases characterized by impaired insulin signalling and high blood glucose. A growing body of epidemiological evidence links diabetes to several types of cancer but the underlying molecular mechanisms are poorly understood. The signalling cascade connecting insulin and FOXO proteins provides a compelling example for a conserved pathway at the interface between insulin signalling and cancer. FOXOs are transcription factors that orchestrate programs of gene expression known to control a variety of processes in response to cellular stress...
June 19, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28630964/an-insertion-self-fusion-mechanism-for-cell-membrane-immobilization-on-porous-silica-beads-to-fabricate-biomimic-carriers
#7
Xu Wang, Liang Xu, Ruizhi Mao, Xinchao Zhao, Bei Xu, Cheng Tang, Jiahui He, Yanwen Zhang
Immobilization of membrane proteins on solid supports with high stability, favorable reusability and prevention of contamination is of great interest in nanobiology and medicine. Cell membrane coating technology enables the membrane proteins associated with their surrounding membranes to co-immobilize onto the solid matrix, largely enhancing the loading efficiency and conserving the bioactivity of the membrane proteins. Herein, we systematically illustrate the mechanism of cell membrane immobilization on porous silica beads, facilitating the fabricated biomimic carriers applied for chromatography...
June 20, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28630388/spontaneous-liver-rupture-associated-with-anticoagulant-therapy-a-case-report
#8
Marco Clementi, Sara Colozzi, Stefano Guadagni, Beatrice Pessia, Federico Sista, Mario Schietroma, Andrea Della Penna, Gianfranco Amicucci
Spontaneous hepatic rupture without underlying liver diseases is uncommon entity. We report a rare case of spontaneous rupture of liver hematoma in patient treated with warfarin end enoxaparin sodium because of pulmonary embolism. Two day after admission the patient complained generalized abdominal pain and hemodynamic instability. The abdominal US and TC scan revealed free fluid and lesion at right liver lobe. The patient, despite intravenous fluid support and blood transfusion, was hemodinamically instable and urgent laparotomy was needed...
January 20, 2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28629971/survey-of-pathogens-in-threatened-wild-red-tailed-amazon-parrot-amazona-brasiliensis-nestlings-in-rasa-island-brazil
#9
Frederico Fontanelli Vaz, Patrícia Pereira Serafini, Rosangela Locatelli-Dittrich, Rafael Meurer, Edison Luiz Durigon, Jansen de Araújo, Luciano Matsumiya Thomazelli, Tatiana Ometto, Elenise Angelotti Bastos Sipinski, Rafael Meirelles Sezerban, Maria Cecília Abbud, Tânia Freitas Raso
The red-tailed Amazon parrot (Amazona brasiliensis) is a threatened species of psittacine bird that inhabit coastal regions of Brazil. In view of the threat of this species, the aim of this study was to perform a health evaluation in wild nestlings in Rasa Island, determining the prevalence of enterobacteria and infectious agents according to type of nest. Blood samples were collected from 64 birds and evaluated for antibodies of Chlamydia psittaci by commercial dot-blot ELISA. Cloacal and oropharyngeal swabs samples were collected from 23 birds from artificial wooden nests, 15 birds from PVC nests and 2 birds from natural nests for microbiological analysis...
June 3, 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/28629849/analysis-of-archived-newborn-dried-blood-spots-dbs-identifies-congenital-cytomegalovirus-as-a-major-cause-of-unexplained-pediatric-sensorineural-hearing-loss
#10
Lucy Meyer, Bazak Sharon, Tina C Huang, Abby C Meyer, Kristin E Gravel, Lisa A Schimmenti, Elizabeth C Swanson, Hannah E Herd, Nelmary Hernandez-Alvarado, Kirsten R Coverstone, Mark McCann, Mark R Schleiss
PURPOSE: Congenital cytomegalovirus (cCMV) infection is the most common non-genetic cause of sensorineural hearing loss (SNHL). However, accurate diagnosis of cCMV as the etiology of SNHL is problematic beyond the neonatal period. This study therefore examined whether cCMV infection could be identified retrospectively in children presenting with unexplained SNHL to a multidisciplinary diagnostic outpatient otolaryngology clinic at an academic medical center in Minnesota. METHODS: Over a 4-year period, 57 patients with an age range of 3months to 10years with unexplained SNHL were recruited to participate in this study...
June 7, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28627438/genome-wide-identification-phylogeny-and-expression-of-bone-morphogenetic-protein-genes-in-tetraploidized-common-carp-cyprinus-carpio
#11
Lin Chen, Chuanju Dong, Shengnan Kong, Jiangfan Zhang, Xuejun Li, Peng Xu
Bone morphogenetic proteins (Bmps) are a group of signaling molecules known to play important roles during formation and maintenance of various organs, not only bone, but also muscle, blood and so on. Common carp (Cyprinus carpio) is one of the most intensively studied fish due to its economic and environmental importance. Besides, common carp had encountered an additional round of whole genome duplication (WGD) compared with many closely related diploid teleost, which make it one of the most important models for genome evolutionary studies in teleost...
June 13, 2017: Gene
https://www.readbyqxmd.com/read/28625299/managing-major-obstetric-haemorrhage-pharmacotherapy-and-transfusion
#12
REVIEW
Rachel Collis, Emilia Guasch
Major obstetric haemorrhage is a leading cause of maternal mortality. A prescriptive approach to early recognition and management is critical to improving outcomes. Uterine atony is the primary cause of post-partum haemorrhage. First-line prevention and treatment include the administration of uterine tonic agents; other conservative measures include uterine cavity tamponade and uterine compression sutures. Interventional radiology procedures have been used for both prophylaxis and treatment, but a hysterectomy may be necessary if conservative measures fail...
March 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/28624491/the-first-report-of-cathepsin-a-gene-in-a-teleost-rock-bream-oplegnathus-fasciatus-an-investigation-of-immune-functions-upon-infection-with-several-pathogens
#13
Ju-Won Kim, Hee Jeong Kong, Bo-Hye Nam, Jung Youn Park, Do-Hyung Kim, Ji-Min Jeong, Chan-Il Park
We isolated and characterised a cDNA encoding the lysosomal protective protein (serine protease) cathepsin A (CTSA) from rock bream (Oplegnathus fasciatus). The full-length rock bream CTSA (RbCTSA) cDNA (1814 bp) contains an open reading frame of 1419 bp that encodes 472 amino acids. Alignment of multiple CTSA protein sequences revealed that the active site serine and histidine residues were well-conserved among the other CTSA sequences. RbCTSA is highly expressed in the peripheral blood leukocytes, kidney, spleen, liver, intestine, gill, heart, brain, stomach, and eye...
June 14, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28623397/different-effects-of-%C3%AE-linolenic-acid-gla-supplementation-on-plasma-and-red-blood-cell-phospholipid-fatty-acid-composition-and-calcium-oxalate-kidney-stone-risk-factors-in-healthy-subjects-from-two-race-groups-with-different-risk-profiles-pose-questions-about
#14
Allen L Rodgers, Dalielah Jappie-Mahomed, Paul J van Jaarsveld
Fatty acid (FA) composition of phospholipids in plasma and red blood cells (RBC) can influence calciuria, oxaluria and renal stone formation. In this regard, the ratio of arachidonic acid (AA) and its precursor linoleic acid (LA) appears to be important. Administration of γ-linolenic acid (GLA) has been shown to increase the concentration of dihomo-gamma linoleic acid (DGLA) relative to AA indicating that it may attenuate biosynthesis of the latter. Such effects have not been investigated in race groups having difference stone occurrence rates...
June 16, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28621285/assessment-of-c-reactive-proteins-cytokines-and-plasma-protein-levels-in-hypertensive-patients-with-apical-periodontitis
#15
N Rashmi, Vineet Galhotra, Pallavi Goel, Jagadish P Rajguru, Satyendra K Jha, Kiran Kulkarni
INTRODUCTION: Chronic apical periodontitis (CAP) manifests mostly as periapical radiolucency. Various inflammatory mediators play a significant role in the pathogenesis of apical periodontitis. In acute inflammatory conditions, C-reactive proteins (CRP) and fibrinogen show a rise in their concentrations. In chronic diseases with high inflammatory components, an increased prevalence of hypertension has been observed. Hence, we assessed the association of CAP and plasma levels of various inflammatory markers (CRP, interleukin 6 [IL-6], and fibrinogen) in severely hypertensive patients...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28620385/the-antibody-secreting-cell-response-to-infection-kinetics-and-clinical-applications
#16
REVIEW
Michael J Carter, Ruth M Mitchell, Patrick M Meyer Sauteur, Dominic F Kelly, Johannes Trück
Despite the availability of advances in molecular diagnostic testing for infectious disease, there is still a need for tools that advance clinical care and public health. Current methods focus on pathogen detection with unprecedented precision, but often lack specificity. In contrast, the host immune response is highly specific for the infecting pathogen. Serological studies are rarely helpful in clinical settings, as they require acute and convalescent antibody testing. However, the B cell response is much more rapid and short-lived, making it an optimal target for determining disease aetiology in patients with infections...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28619362/peroxiredoxin-1-from-cuttlefish-sepiella-maindroni-molecular-characterization-of-development-and-its-immune-response-against-vibrio-alginolyticus
#17
Weiwei Song, Changkao Mu, Ronghua Li, Chunlin Wang
The aim of this work was constructive to understand the function of peroxiredoxin (PRDX) family member Peroxiredoxin 1 in Sepiella maindroni (SmPrx1) through molecular mechanisms of reproduction, embryonic development and immune responses to Vibrio alginolyticus. The full-length cDNA of SmPrx1 was of 1062 bp, contains a 5' untranslated region (UTR) of 79bp, a 3' UTR of 359 bp, an open reading frame of 624 bp encoding 207 amino acids. The conserved peroxidase catalytic center "FYPLDFTFVCPTEI" and "GEVCPA" were observed in the sequence of SmPrx1; this indicated that it was a member of 2-Cys Prx...
June 12, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28617968/diversity-of-human-herpesvirus-8-genotypes-in-patients-with-aids-and-non-aids-associated-kaposi-s-sarcoma-castleman-s-disease-and-primary-effusion-lymphoma-in-argentina
#18
Celeste Luján Pérez, Mónica I Tous
HHV-8 genotypes are distributed heterogeneously worldwide. The variable K1 gene and the conserved ORF26E region serve to genotype. The aim of the study was to characterize HHV-8 isolates from patients with AIDS, classical, and iatrogenic KS, primary effusion lymphoma and Castleman's disease and one organ donor from Argentina by analysis of ORFK1 and ORF26E regions. DNA was extracted from fresh or paraffin embedded biopsies, blood and saliva samples and submitted to HHV-8 PCR. Phylogenetic analyses of ORFK1 showed that subtypes C (C1, C2 and C3), B1 and A (A1, A2 and A3) were present in 70...
June 15, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28616238/validation-of-a-portable-waterproof-blood-ph-analyser-for-elasmobranchs
#19
Brendan Talwar, Ian A Bouyoucos, Oliver Shipley, Jodie L Rummer, John W Mandelman, Edward J Brooks, R Dean Grubbs
Quantifying changes in blood chemistry in elasmobranchs can provide insights into the physiological insults caused by anthropogenic stress, and can ultimately inform conservation and management strategies. Current methods for analysing elasmobranch blood chemistry in the field are often costly and logistically challenging. We compared blood pH values measured using a portable, waterproof pH meter (Hanna Instruments HI 99161) with blood pH values measured by an i-STAT system (CG4+ cartridges), which was previously validated for teleost and elasmobranch fishes, to gauge the accuracy of the pH meter in determining whole blood pH for the Cuban dogfish (Squalus cubensis) and lemon shark (Negaprion brevirostris)...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28615725/transcriptome-analysis-reveals-similarities-between-human-blood-cd3-cd56-bright-cells-and-mouse-cd127-innate-lymphoid-cells
#20
David S J Allan, Ana Sofia Cerdeira, Anuisa Ranjan, Christina L Kirkham, Oscar A Aguilar, Miho Tanaka, Richard W Childs, Cynthia E Dunbar, Jack L Strominger, Hernan D Kopcow, James R Carlyle
For many years, human peripheral blood natural killer (NK) cells have been divided into functionally distinct CD3(-) CD56(bright) CD16(-) and CD3(-) CD56(dim) CD16(+) subsets. Recently, several groups of innate lymphoid cells (ILC), distinct from NK cells in development and function, have been defined in mouse. A signature of genes present in mouse ILC except NK cells, defined by Immunological Genome Project studies, is significantly over-represented in human CD56(bright) cells, by gene set enrichment analysis...
June 14, 2017: Scientific Reports
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