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https://www.readbyqxmd.com/read/28645197/pht%C3%AE-promoted-mobilization-of-non-conjugative-resistance-plasmids-from-enterococcus-faecium-to-enterococcus-faecalis
#1
Laura Di Sante, Gianluca Morroni, Andrea Brenciani, Carla Vignaroli, Alberto Antonelli, Marco Maria D'Andrea, Andrea Di Cesare, Eleonora Giovanetti, Pietro E Varaldo, Gian Maria Rossolini, Francesca Biavasco
Objectives: : To analyse the recombination events associated with conjugal mobilization of two multiresistance plasmids, pRUM 17i48 and pLAG (formerly named pDO1-like), from Enterococcus faecium 17i48 to Enterococcus faecalis JH2-2. Methods: : The plasmids from two E. faecalis transconjugants (JH-4T, tetracycline resistant, and JH-8E, erythromycin resistant) and from the E. faecium donor (also carrying a pHTβ-like conjugative plasmid, named pHTβ 17i48 ) were investigated by several methods, including PCR mapping and sequencing, S1-PFGE followed by Southern blotting and hybridization, and WGS...
June 22, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28644817/graphene-based-humidity-sensors-the-origin-of-alternating-resistance-change
#2
Vasilii I Popov, Danil Nikolaev, Vladimir B Timofeev, Svetlana Smagulova, Irina Antonova
The response of graphene based humidity sensor is considered as a function of film structures. Analysis of resistance changes due to water molecule adsorption on graphene or multigraphene (MLG) surface is performed for films with a different resistivity from hundreds of Ohm/sq to hundreds of kOhm/sq. It has revealed a possible increase, decrease and non monotonous behavior of resistance. Adsorption of water molecules at grain boundary defects is supposed to lead to an increase in film resistivity due to the donor property of water and p-type conductivity of graphene...
June 23, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28644773/mobilized-peripheral-blood-stem-cells-versus-unstimulated-bone-marrow-as-a-graft-source-for-t-cell-replete-haploidentical-donor-transplantation-using-post-transplant-cyclophosphamide
#3
Asad Bashey, Mei-Jie Zhang, Shannon R McCurdy, Andrew St Martin, Trevor Argall, Claudio Anasetti, Stefan O Ciurea, Omotayo Fasan, Sameh Gaballa, Mehdi Hamadani, Pashna Munshi, Monzr M Al Malki, Ryotaro Nakamura, Paul V O'Donnell, Miguel-Angel Perales, Kavita Raj, Rizwan Romee, Scott Rowley, Vanderson Rocha, Rachel B Salit, Melhem Solh, Robert J Soiffer, Ephraim Joseph Fuchs, Mary Eapen
Purpose T-cell-replete HLA-haploidentical donor hematopoietic transplantation using post-transplant cyclophosphamide was originally described using bone marrow (BM). With increasing use of mobilized peripheral blood (PB), we compared transplant outcomes after PB and BM transplants. Patients and Methods A total of 681 patients with hematologic malignancy who underwent transplantation in the United States between 2009 and 2014 received BM (n = 481) or PB (n = 190) grafts. Cox regression models were built to examine differences in transplant outcomes by graft type, adjusting for patient, disease, and transplant characteristics...
June 23, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28644753/a-comparison-of-the-neutrophil-lymphocyte-platelet-lymphocyte-and-monocyte-lymphocyte-ratios-in-schizophrenia-and-bipolar-disorder-patients-a-retrospective-file-review
#4
Selçuk Özdin, Gökhan Sarisoy, Ömer Böke
Neutrophil-lymphocyte ratio (NLR), platelet-lymphocyte ratio (PLR) and monocyte-lymphocyte ratio (MLR) have recently been used as indicators of inflammation. Higher MLR and PLR values have been determined in the euthymic and manic periods in patients with bipolar disorder compared to a control group. High NLR values were determined in the only study investigating this ratio in schizophrenia patients. The purpose of this study was to compare NLR, PLR and MLR values and complete blood count elements in patients receiving treatment and hospitalized due to schizophrenic psychotic episode and bipolar disorder manic episode...
June 23, 2017: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/28644555/a-self-assembled-trigonal-prismatic-molecular-vessel-for-catalytic-dehydration-reactions-in-water
#5
Partha Sarathi Mukherjee, Paramita Das, Atul Kumar, Prodip Howlader
A water-soluble Pd6 trigonal prism (A) was synthesized by two-component coordination-driven self-assembly of a Pd(II) 90° acceptor with a tetraimidazole donor. As the walls of the prism are constructed by three conjugated aromatic building blocks, the confined pocket of the prism is hydrophobic. In addition to the hydrophobic cavity, large product egress windows make A an ideal molecular vessel to catalyze otherwise challenging pseudo multicomponent dehydration reactions in its confined nanospace in aqueous medium...
June 23, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28644475/post-translational-modification-of-ribosomally-synthesized-peptides-by-a-radical-sam-epimerase-in-bacillus-subtilis
#6
Alhosna Benjdia, Alain Guillot, Pauline Ruffié, Jérôme Leprince, Olivier Berteau
Ribosomally synthesized peptides are built out of L-amino acids, whereas D-amino acids are generally the hallmark of non-ribosomal synthetic processes. Here we show that the model bacterium Bacillus subtilis is able to produce a novel type of ribosomally synthesized and post-translationally modified peptide that contains D-amino acids, and which we propose to call epipeptides. We demonstrate that a two [4Fe-4S]-cluster radical S-adenosyl-L-methionine (SAM) enzyme converts L-amino acids into their D-counterparts by catalysing Cα-hydrogen-atom abstraction and using a critical cysteine residue as the hydrogen-atom donor...
July 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28644410/enhanced-antibacterial-activity-of-ent-labdane-derivatives-of-salvic-acid-7%C3%AE-hydroxy-8-17-ent-labden-15-oic-acid-effect-of-lipophilicity-and-the-hydrogen-bonding-role-in-bacterial-membrane-interaction
#7
Javier Echeverría, Alejandro Urzúa, Loreto Sanhueza, Marcela Wilkens
In the present study, the antibacterial activity of several ent-labdane derivatives of salvic acid (7α-hydroxy-8(17)-ent-labden-15-oic acid) was evaluated in vitro against the Gram-negative bacterium Escherichia coli and the Gram-positive bacteria Staphylococcus aureus and Bacillus cereus. For all of the compounds, the antibacterial activity was expressed as the minimum inhibitory concentration (MIC) in liquid media and minimum inhibitory amount (MIA) in solid media. Structure activity relationships (SAR) were employed to correlate the effect of the calculated lipophilicity parameters (logPow) on the inhibitory activity...
June 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28644289/the-growing-need-for-diverse-blood-donors
#8
Linda M MacIntyre
: Research shows that phenotype matching can improve the outcomes of people who receive repeated transfusions. In addition, the demographics of the United States are shifting, and more ethnically and racially diverse donors are needed. These factors have health implications and require ongoing efforts to ensure a safe and adequate U.S. blood supply. Nurses can help to develop and implement strategies to increase the number and diversity of blood donors, ensuring donations better match the needs of transfusion recipients daily and in the event of a public health emergency...
July 2017: American Journal of Nursing
https://www.readbyqxmd.com/read/28644262/host-related-risk-factors-for-adherent-perinephric-fat-in-healthy-individuals-undergoing-laparoscopic-living-donor-nephrectomy
#9
Shintaro Narita, Teruaki Kumazawa, Norihiko Tsuchiya, Huang Mingguo, Mitsuru Saito, Takamitsu Inoue, Hiroshi Tsuruta, Kazuyuki Numakura, Atsushi Maeno, Hiroshi Nanjo, Shigeru Satoh, Tomonori Habuchi
PURPOSE: The purpose of this study is to assess the risk factors and characteristics of adherent perinephric fat (APF) in healthy individuals. PATIENTS AND METHODS: Men who underwent laparoscopic donor nephrectomy were included. Video review was used to divide patients on the basis of APF severity. Relationship between APF scores and clinical and radiographic features was evaluated. RESULTS: Of the 92 patients, 43 (46.7%) and 8 (8.7%) were categorized as APF and severe APF, respectively...
June 21, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28644241/long-term-ocular-surface-stability-in-conjunctival-limbal-autograft-donor-eyes
#10
Albert Y Cheung, Enrica Sarnicola, Edward J Holland
PURPOSE: To investigate the incidence of limbal stem cell deficiency (LSCD) in donor eyes after conjunctival limbal autograft (CLAU). METHODS: An observational retrospective review was performed on all patients who underwent CLAU alone, combined keratolimbal allograft with CLAU ("Modified Cincinnati Procedure"), or combined living-related conjunctival limbal allograft (lr-CLAL) with CLAU having ≥6 months of follow-up after surgery. The outcome measures were best-corrected visual acuity (BCVA) and ocular surface status...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28644219/an-uncommon-complication-of-laparoscopic-live-donor-nephrectomy
#11
Karen A Beer
Chylous ascites is an uncommon complication of laparoscopic live donor nephrectomy, occurring when milky chyle from the lymphatic system leaks into the peritoneal cavity. This can occur after trauma or be caused by obstruction of the lymphatic system. Treatment may include a fat-free diet, total parenteral nutrition, subcutaneous somatostatin, lymphangiography, and/or surgical closure of the leaking lymph vessel.
July 2017: JAAPA: Official Journal of the American Academy of Physician Assistants
https://www.readbyqxmd.com/read/28643874/2-6-bis-diazaboryl-pyridine-a-superbasic-sterically-demanding-pyridine-ligand
#12
Tobias Böttcher, Daniel Himmel, Jan Schröder
Herein we present a convenient one-pot route to a sterically demanding superbasic pyridine. Functionalization of the 2,6-positions with the highly sigma-donating boryl-groups shifts the calculated gas phase basicity of the pyridine's nitrogen atom to 1012 kJ mol-1, which outperforms the 'proton sponge' 1,8-bis(dimethylamino)naphthalene (996 kJ mol-1). The diazaboryl groups are oriented orthogonal to the pyridine ring and do not block the N-position, resembling the geometry of commonly used N-heterocyclic carbenes...
June 23, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28643867/transfusion-transmitted-cmv-infection%C3%A2-%C3%A2-current-knowledge-and-future-perspectives
#13
REVIEW
M Ziemann, T Thiele
Transmission of human cytomegalovirus (CMV) via transfusion (TT-CMV) may still occur and remains a challenge in the treatment of immunocompromised CMV-seronegative patients, e.g. after stem cell transplantation, and for low birthweight infants. Measures to reduce the risk of TT-CMV have been evaluated in clinical studies, including leucocyte depletion of cellular blood products and/or the selection of CMV-IgG-negative donations. Studies in large blood donor cohorts indicate that donations from newly CMV-IgG-positive donors should bear the highest risk for transmitting CMV infections because they contain the highest levels of CMV-DNA, and early CMV antibodies cannot neutralise CMV...
June 23, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28643577/an-assessment-of-advance-relatives-approach-for-brain-death-organ-donation
#14
Carine Michaut, Antoine Baumann, Hélène Gregoire, Corinne Laviale, Gérard Audibert, Xavier Ducrocq
BACKGROUND: Advance announcement of forthcoming brain death has developed to enable intensivists and organ procurement organisation coordinators to more appropriately, and separately from each other, explain to relatives brain death and the subsequent post-mortem organ donation opportunity. Research aim: The aim was to assess how potentially involved healthcare professionals perceived ethical issues surrounding the strategy of advance approach. RESEARCH DESIGN: A multi-centre opinion survey using an anonymous self-administered questionnaire was conducted in the six-member hospitals of the publicly funded East of France regional organ and tissue procurement network called 'Prélor'...
January 1, 2017: Nursing Ethics
https://www.readbyqxmd.com/read/28643465/severe-hemolysis-after-plasma-transfusion-in-a-neonate-with-necrotizing-enterocolitis-clostridium-perfringens-infection-and-red-blood-cell-t-polyagglutination
#15
Julia Moh-Klaren, Gwellaouen Bodivit, Myriam Jugie, Philippe Chadebech, Laurent Chevret, Mostafa Mokhtari, Xavier Chamillard, Philippe Gallon, Pierre Tissières, Philippe Bierling, Rachid Djoudi, France Pirenne, Nicolas Burin-des-Roziers
BACKGROUND: Red blood cell (RBC) Thomsen-Friedenreich antigen exposure (T activation) in infants with necrotizing enterocolitis (NEC) has occasionally been associated with posttransfusional intravascular hemolysis thought to be due to anti-T antibodies in the donor plasma. STUDY DESIGN AND METHODS: We describe an infant with NEC and Clostridium perfringens infection complicated by severe hemolysis after plasma transfusion. After this case, infants with confirmed NEC were prospectively evaluated for T activation...
June 22, 2017: Transfusion
https://www.readbyqxmd.com/read/28643428/mechanical-circulatory-support-in-the-treatment-of-advanced-heart-failure
#16
Amanda W Cai, Sabrina Islam, Shelley R Hankins, Wade Fischer, Howard J Eisen
According to the Centers for Disease Control (CDC), heart failure (HF) remains a pervasive condition with high morbidity and mortality, affecting 5.8 million people in the United States (US) and 23 million worldwide. For patients with refractory end-stage HF, heart transplantation is the gold standard for definitive treatment. However, the demand for heart transplantation has consistently exceeded the availability of donor hearts, with approximately 2,331 orthotopic heart transplantations performed in the US in 2015 despite an estimated 100,000 to 250,000 patients with New York Heart Association (NYHA) class IIIB or IV symptoms that are refractory to medical treatment and potential transplant candidates...
June 22, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28643261/genome-editing-of-silkworms
#17
Takuya Tsubota, Hideki Sezutsu
Silkworm is a lepidopteran insect that has been used as a model for a wide variety of biological studies. The microinjection technique is available and it is possible to cause transgenesis as well as target gene disruption via the genome editing technique. TALEN-mediated knock-out is especially effective in this species. We also succeeded in the precise and efficient integration of a donor vector using the Precise Integration into Target Chromosome (PITCh) method. Here, we describe protocols for ZFN, TALEN, and CRISPR/Cas9-mediated genome editing as well as the PITCh technique in the silkworm...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28643258/crispr-cas9-mediated-targeted-knockin-of-exogenous-reporter-genes-in-zebrafish
#18
Atsuo Kawahara
Genome editing technologies such as ZFN, TALEN, and CRISPR/Cas9 efficiently induce DNA double-stranded breaks (DSBs) at a targeted genomic locus, often resulting in a frameshift-mediated target gene disruption. It remains difficult to perform targeted integration of exogenous genes by genome editing technologies. DSBs can be restored through DNA repair mechanisms, such as non-homologous end joining (NHEJ), microhomology-mediated end joining (MMEJ), and homologous recombination (HR). It is well known that HR facilitates homology-dependent integration of donor DNA template into a targeted locus...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28643255/genome-editing-of-pig
#19
Masahito Watanabe, Hiroshi Nagashima
Pigs are important livestock for food and have been used in various biomedical studies, particularly translational research, as experimental animals because of their anatomical and physiological similarity to humans. The recent development of genome editing techniques, such as ZFN, TALEN, and CRISPR/Cas9, has rapidly expanded the use of genome editing tools in a variety of animals, resulting in the relatively easy and efficient generation of gene knock-out pigs. In the past few years, there has been a sustained increase in reports describing the development of genetically modified pigs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28643089/time-lapse-observation-and-transcriptome-analysis-of-a-case-with-repeated-multiple-pronuclei-after-ivf-icsi
#20
J Dai, L Z Leng, C F Lu, F Gong, S P Zhang, W Zheng, G X Lu, G Lin
PURPOSE: The purpose of this study was to investigate the cause of repeated multipronucleus (MPN) formation in zygotes in a patient after both in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). METHOD: This is a case study. A patient had unexplained primary infertility with recurring total MPN zygotes after IVF and ICSI cycles. Time-lapse monitoring of pronucleus formation was carried out. Embryos developed from MPN zygotes were analyzed by fluorescence in situ hybridization (FISH)...
June 22, 2017: Journal of Assisted Reproduction and Genetics
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