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https://www.readbyqxmd.com/read/28333830/minimal-variation-in-anti-a-and-b-titers-among-healthy-volunteers-over-time-implications-for-the-use-of-out-of-group-blood-components
#1
Ulrik Sprogøe, Mark Yazer, Mads Hvidkjær Rasmussen, Berit Antonsen, Claus Bistrup, Kristian Assing
BACKGROUND: Using potentially out-of-group blood components, like low titer A plasma and O whole blood, in the resuscitation of trauma patients is becoming increasingly popular. However, very little is known whether the donors' anti-A and/or -B titers change over time and whether repeated titer measurements on the same donor are required to ensure that each donation produces a low titer product. METHODS: The anti-A and/or -B titers were measured on 56 healthy adult volunteers (47 blood donors; 9 blood center personnel) every three months for 12 consecutive months using an automated solid phase analyzer...
March 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28330243/micropropagation-and-validation-of-genetic-and-biochemical-fidelity-among-regenerants-of-nothapodytes-nimmoniana-graham-mabb-employing-issr-markers-and-hplc
#2
Lokesh Prakash, Sushil Kumar Middha, Sudipta Kumar Mohanty, Mallappa Kumara Swamy
An in vitro protocol has been established for clonal propagation of Nothapodytes nimmoniana which is an important source of Camptothecin (CPT). Elite source was identified based on the chemical potency to accumulate the optimum level of CPT. Different types and concentrations of plant growth regulators were used to study their effect on inducing multiple shoots from the explants regenerated from embryos of N. nimmoniana. Of these, a combination of N6-benzyladenine (0.2 mg L(-1)) and Indole-3-butyric acid (IBA) (0...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28321984/reciprocity-to-increase-participation-of-compatible-living-donor-and-recipient-pairs-in-kidney-paired-donation
#3
John S Gill, Kathryn Tinckam, Marie Chantal Fortin, Caren Rose, Kara Shick-Makaroff, Kimberly Young, Julie Lesage, Edward H Cole, Maeghan Toews, David N Landsberg, Jagbir Gill
Inclusion of compatible living donor and recipient pairs (CPs) in kidney paired donation (KPD) programs could increase living donor transplantation. We introduce the concept of a reciprocity based strategy in which the recipient of a CP that participates in KPD receives priority for a repeat deceased donor transplant in the event their primary living donor KPD transplant fails, and review the practical and ethical considerations of this strategy. The strategy limits prioritization to CPs already committed to living donation, minimizing the risk of unduly influencing donor behavior...
March 21, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28319202/evolving-notch-polyq-tracts-reveal-possible-solenoid-interference-elements
#4
Albert J Erives
Polyglutamine (polyQ) tracts in regulatory proteins are extremely polymorphic. As functional elements under selection for length, triplet repeats are prone to DNA replication slippage and indel mutations. Many polyQ tracts are also embedded within intrinsically disordered domains, which are less constrained, fast evolving, and difficult to characterize. To identify structural principles underlying polyQ tracts in disordered regulatory domains, here I analyze deep evolution of metazoan Notch polyQ tracts, which can generate alleles causing developmental and neurogenic defects...
2017: PloS One
https://www.readbyqxmd.com/read/28315050/forensic-use-of-y-chromosome-dna-a-general-overview
#5
REVIEW
Manfred Kayser
The male-specific part of the human Y chromosome is widely used in forensic DNA analysis, particularly in cases where standard autosomal DNA profiling is not informative. A Y-chromosomal gene fragment is applied for inferring the biological sex of a crime scene trace donor. Haplotypes composed of Y-chromosomal short tandem repeat polymorphisms (Y-STRs) are used to characterise paternal lineages of unknown male trace donors, especially suitable when males and females have contributed to the same trace, such as in sexual assault cases...
March 17, 2017: Human Genetics
https://www.readbyqxmd.com/read/28314955/outcome-of-descemet-stripping-automated-endothelial-keratoplasty-in-eyes-with-an-ahmed-glaucoma-valve
#6
Patrick J Chiam, Robert Cheeseman, Vivian W Ho, Vito Romano, Anshoo Choudhary, Mark Batterbury, Stephen B Kaye, Colin E Willoughby
PURPOSE: The purpose was to investigate the survival of Descemet stripping automated endothelial keratoplasty (DSAEK) in eyes with an Ahmed glaucoma valve (AGV). METHODS: The study had a retrospective case-series of patients with an AGV in the anterior chamber undergoing a DSAEK. Included in the analysis were graft size, number of previous operations, post-operative glaucoma medications, post-operative intraocular pressure (IOP) control, graft size and donor factors (age, endothelial cell density, and post-mortem time)...
March 17, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28302575/male-rats-play-a-repeated-donation-game
#7
Grace Li, Ruth I Wood
While previous studies have demonstrated direct and generalized reciprocity in female Norway rats [26], the present study determined if unrelated male laboratory rats respond on behalf of a partner in an iterated sequential game. Pairs of rats worked for food reward in an operant chamber, where participants alternated as Donor and Responder in successive trials. In each trial, the Donor chose between variable and constant reward levers, where the constant reward lever delivered 1 pellet, and the variable reward lever triggered insertion of Responder lever(s); the Donor received 2 pellets when the Responder made any response...
March 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28296739/ugt1a1-28-relationship-with-abnormal-total-bilirubin-levels-in-chronic-hepatitis-c-patients-outcomes-from-a-case-control-study
#8
Marcelo Moreira Tavares de Souza, Victor Van Vaisberg, Rodrigo Martins Abreu, Aline Siqueira Ferreira, Camila daSilvaFerreira, Paulo Dominguez Nasser, Helena Scavone Paschoale, Flair José Carrilho, Suzane Kioko Ono
Gilbert syndrome (GS) is a frequent benign clinical condition, marked by intermittent unconjugated hyperbilirubinemia, mostly due to the polymorphism uridine diphosphate-glucuronosyltransferase 1A1*28 (UGT1A1*28). Hyperbilirubinemia has been reported in a GS patient undergoing hepatitis C treatment, and other UGT isoforms polymorphisms have been linked to worse outcomes in viral hepatitis. Yet, little is known to GS contributions' to the liver disease scenario. Our aim was to assess UGT1A1 genotypes' frequency in chronic hepatitis C (CHC) patients and correlate with total bilirubin (TB)...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28295838/chasing-ghosts-allopolyploid-origin-of-oxyria-sinensis-polygonaceae-from-its-only-diploid-congener-and-an-unknown-ancestor
#9
Xin Luo, Quanjun Hu, Pingping Zhou, Dan Zhang, Qian Wang, Richard J Abbott, Jianquan Liu
Reconstructing the origin of a polyploid species is particularly challenging when an ancestor has become extinct. Under such circumstances the extinct donor of a genome found in the polyploid may be treated as a 'ghost' species in that its prior existence is recognised through the presence of its genome in the polyploid. In this study, we aimed to determine the polyploid origin of Oxyria sinensis (2n=40) for which only one congeneric species is known, i.e. diploid O. digyna (2n=14). Genomic in situ hybridization (GISH), transcriptome, phylogenetic and demographic analyses, and ecological niche modeling were conducted for this purpose...
March 12, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28293239/major-histocompatibility-complex-class-i-chain-related-a-mica-molecules-relevance-in-solid-organ-transplantation
#10
REVIEW
Ajay Kumar Baranwal, Narinder K Mehra
An ever growing number of reports on graft rejection and/or failure even with good HLA matches have highlighted an important role of non-HLA antigens in influencing allograft immunity. The list of non-HLA antigens that have been implicated in graft rejection in different types of organ transplantation has already grown long. Of these, the Major Histocompatibility Complex class I chain-related molecule A (MICA) is one of the most polymorphic and extensively studied non-HLA antigenic targets especially in the kidney transplantation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28288346/synthesis-of-a-disaccharide-repeating-unit-of-the-o-antigen-from-burkholderia-ambifaria-and-its-oligomers
#11
Dongyue Wang, Weiwei Zhuge, Zhongwu Guo, Guofeng Gu
A disaccharide repeating unit of the O-antigen from Burkholderia ambifaria, 6-deoxy-β-d-Alt-(1 → 4)-α-d-Rha-O(CH2)3NH2 (1), and its dimer and trimer, 6-deoxy-β-d-Alt-(1 → 4)-α-d-Rha-(1 → 3)-6-deoxy-β-d-Alt-(1 → 4)-α-d-Rha-O(CH2)3NH2 (2) and 6-deoxy-β-d-Alt-(1 → 4)-α-d-Rha-(1 → 3)-6-deoxy-β-d-Alt-(1 → 4)-α-d-Rha-(1 → 3)-6-deoxy-β-d-Alt-(1 → 4)-α-d-Rha-O(CH2)3NH2 (3), were synthesized via a convergent strategy. The key disaccharyl thioglycoside 4 as a glycosyl donor was stereoselectively assembled by glycosylation of rhammnosyl acceptor 5 with 6-deoxy-altrosyl trichloroacetimidate donor 6b...
March 6, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28282376/the-transjugation-machinery-of-thermus-thermophilus-identification-of-tdta-an-atpase-involved-in-dna-donation
#12
Alba Blesa, Ignacio Baquedano, Nieves G Quintáns, Carlos P Mata, José R Castón, José Berenguer
In addition to natural competence, some Thermus thermophilus strains show a high rate of DNA transfer via direct cell-to-cell contact. The process is bidirectional and follows a two-step model where the donor cell actively pushes out DNA and the recipient cell employs the natural competence system to take up the DNA, in a hybrid transformation-dependent conjugation process (transjugation). While the DNA uptake machinery is well known as in other bacterial species that undergo transformation, the pushing step of transjugation remains to be characterized...
March 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28272984/exogenous-gene-integration-mediated-by-genome-editing-technologies-in-zebrafish
#13
Hitoshi Morita, Kiyohito Taimatsu, Kanoko Yanagi, Atsuo Kawahara
Genome editing technologies, such as transcription activator-like effector nuclease (TALEN) and the clustered regularly interspaced short palindromic repeat (CRISPR)/ CRISPR-associated protein (Cas) systems, can induce DNA double-strand breaks (DSBs) at the targeted genomic locus, leading to frameshift-mediated gene disruption in the process of DSB repair. Recently, the technology-induced DSBs followed by DSB repairs are applied to integrate exogenous genes into the targeted genomic locus in various model organisms...
March 8, 2017: Bioengineered
https://www.readbyqxmd.com/read/28270930/derivation-of-a-predictive-model-for-graft-loss-following-acute-kidney-injury-in-kidney-transplant-recipients
#14
Amber O Molnar, Carl van Walraven, Dean Fergusson, Amit X Garg, Greg Knoll
BACKGROUND: Acute kidney injury (AKI) is common in the kidney transplant population. OBJECTIVE: To derive a multivariable survival model that predicts time to graft loss following AKI. DESIGN: Retrospective cohort study using health care administrative and laboratory databases. SETTING: Southwestern Ontario (1999-2013) and Ottawa, Ontario, Canada (1996-2013). PATIENTS: We included first-time kidney only transplant recipients who had a hospitalization with AKI 6 months or greater following transplant...
2017: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/28263891/skin-contamination-as-pathway-for-nicotine-intoxication-in-vapers
#15
Giovanni Maina, Carlotta Castagnoli, Giordana Ghione, Valter Passini, Gianpiero Adami, Francesca Larese Filon, Matteo Crosera
Growing warnings on health effects related to electronic cigarettes have met inconclusive findings at present. This study analyzed the in vitro percutaneous absorption of nicotine resulting by skin contamination with two e-liquids (refill 1 and 2) containing nicotine at 1.8%. Donor chambers of 6 Franz cells for each refill liquid were filled with 1mL of nicotine e-liquid for 24h; at selected intervals, 1.5mL of the receptor solutions were collected for nicotine concentration analysis by mean gas chromatography-mass spectrometry (LOD: 0...
March 2, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28263025/poly-adp-ribose-polymerases-regulate-cell-division-and-development-in-arabidopsis-roots
#16
Caifeng Liu, Qiao Wu, Weiwei Liu, Zongyin Gu, Wenjing Wang, Ping Xu, Hong Ma, Xiaochun Ge
Root organogenesis involves cell division, differentiation and expansion. The molecular mechanisms regulating root development are not fully understood. In this study, we identified poly (ADP-ribose) polymerases (PARPs) as new players in root development. PARP catalyzes poly (ADP-ribosyl)ation of proteins by repeatedly adding ADP-ribose units onto proteins using nicotinamide adenine dinucleotide (NAD(+) ) as the donor. We found that inhibition of PARP activities by 3-aminobenzomide (3-AB) increased the growth rates of both primary and lateral roots, leading to a more developed root system...
March 6, 2017: Journal of Integrative Plant Biology
https://www.readbyqxmd.com/read/28262036/the-effect-of-simulated-flash-heating-pasteurisation-and-holder-pasteurisation-on-human-milk-oligosaccharides
#17
Brodie Daniels, Anna Coutsoudis, Chloe Autran, Kimberly Amundson Mansen, Kiersten Israel-Ballard, Lars Bode
BACKGROUND: Human milk oligosaccharides (HMOs) have important protective functions in human milk. A low-cost remote pasteurisation temperature-monitoring system has been designed using FoneAstra, a cell phone-based networked sensing system to monitor simulated flash heat pasteurisation. AIM: To compare the pasteurisation effect on HMOs of the FoneAstra FH method with the current Sterifeed Holder method used by human milk banks. METHODS: Donor human milk samples (n = 48) were obtained from a human milk bank and pasteurised using the two pasteurisation methods...
March 6, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28260425/optimizing-immunosuppressive-regimens-among-living-donor-renal-transplant-recipients
#18
Mohamed Adel Bakr, Ayman Maher Nagib, Osama Ashry Gheith, Ahmed Farouk Hamdy, Ayman Fathi Refaie, Ahmed Farouk Donia, Ahmed Hassan Neamatalla, Khaled Farouk Eldahshan, Ahmed Abdelfattah Denewar, Mohamed Hamed Abbas, Amany Ismail Mostafa, Mohamed Ahmed Ghoneim
OBJECTIVES: We review different immunosuppressant protocols used for living-donor kidney transplant recipients at our center. MATERIALS AND METHODS: Many prospective randomized studies from our center have been reported between March 1976 and 2016, with more than 2700 renal transplant procedures conducted. The first study was a prospective randomized trial of azathioprine versus cyclosporine. The second study compared triple therapy (prednisolone + azathioprine + cyclosporine) versus conventional therapy (prednisolone + azathioprine)...
February 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28258137/metatranscriptomic-evidence-for-direct-interspecies-electron-transfer-between-geobacter-and-methanothrix-species-in-methanogenic-rice-paddy-soils
#19
Dawn E Holmes, Pravin M Shrestha, David J F Walker, Yan Dang, Kelly P Nevin, Trevor L Woodard, Derek R Lovley
The possibility that Methanothrix (formerly Methanosaeta) and Geobacter species cooperate via direct interspecies electron transfer (DIET) in terrestrial methanogenic environments was investigated in rice paddy soils. Genes with high sequence similarity to the gene for the PilA pilin monomer of the electrically conductive pili (e-pili) of Geobacter sulfurreducens accounted for over half of the PilA gene sequences in metagenomic libraries and 42% of the mRNA transcripts in RNAseq libraries. This abundance of e-pilin genes and transcripts is significant because e-pili can serve as conduits for DIET...
March 3, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28251317/crispr-cas9-mediated-gene-editing-in-human-zygotes-using-cas9-protein
#20
Lichun Tang, Yanting Zeng, Hongzi Du, Mengmeng Gong, Jin Peng, Buxi Zhang, Ming Lei, Fang Zhao, Weihua Wang, Xiaowei Li, Jianqiao Liu
Previous works using human tripronuclear zygotes suggested that the clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9 system could be a tool in correcting disease-causing mutations. However, whether this system was applicable in normal human (dual pronuclear, 2PN) zygotes was unclear. Here we demonstrate that CRISPR/Cas9 is also effective as a gene-editing tool in human 2PN zygotes. By injection of Cas9 protein complexed with the appropriate sgRNAs and homology donors into one-cell human embryos, we demonstrated efficient homologous recombination-mediated correction of point mutations in HBB and G6PD...
March 1, 2017: Molecular Genetics and Genomics: MGG
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