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https://www.readbyqxmd.com/read/28437543/association-of-donor-age-and-sex-with-survival-of-patients-receiving-transfusions
#1
Gustaf Edgren, Henrik Ullum, Klaus Rostgaard, Christian Erikstrup, Ulrik Sartipy, Martin J Holzmann, Olof Nyrén, Henrik Hjalgrim
Importance: Following animal model data indicating the possible rejuvenating effects of blood from young donors, there have been at least 2 observational studies conducted with humans that have investigated whether donor age affects patient outcomes. Results, however, have been conflicting. Objective: To study the association of donor age and sex with survival of patients receiving transfusions. Design, Setting, and Participants: A retrospective cohort study based on the Scandinavian Donations and Transfusions database, with nationwide data, was conducted for all patients from Sweden and Denmark who received at least 1 red blood cell transfusion of autologous blood or blood from unknown donors between January 1, 2003, and December 31, 2012...
April 24, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28437389/normothermic-perfusion-in-the-assessment-and-preservation-of-declined-livers-before-transplantation-hyperoxia-and-vasoplegia-important-lessons-from-the-first-12-cases
#2
Christopher J E Watson, Vasilis Kosmoliaptsis, Lucy V Randle, Alexander E Gimson, Rebecca Brais, John R Klinck, Mazin Hamed, Anastasia Tsyben, Andrew J Butler
BACKGROUND: A program of normothermic ex situ liver perfusion (NESLiP) was developed to facilitate better assessment and use of marginal livers, while minimizing cold ischemia. METHODS: Declined marginal livers and those offered for research were evaluated. Normothermic ex situ liver perfusion was performed using an erythrocyte-based perfusate. Viability was assessed with reference to biochemical changes in the perfusate. RESULTS: Twelve livers (9 donation after circulatory death [DCD] and 3 from brain-dead donors), median Donor Risk Index 2...
May 2017: Transplantation
https://www.readbyqxmd.com/read/28437370/ethics-guide-recommendations-for-organ-donation-focused-physicians-endorsed-by-the-canadian-medical-association
#3
Sam D Shemie, Christy Simpson, Jeff Blackmer, Shavaun MacDonald, Sonny Dhanani, Sylvia Torrance, Paul Byrne
Donation physicians are specialists with expertise in organ and tissue donation and have been recognized internationally as a key contributor to improving organ and tissue donation services. Subsequent to a 2011 Canadian Critical Care Society-Canadian Blood Services consultation, the donation physician role has been gradually implemented in Canada. These professionals are generally intensive care unit physicians with an enhanced focus and expertise in organ/tissue donation. They must manage the dual obligation of caring for dying patients and their families while providing and/or improving organ donation services...
May 2017: Transplantation
https://www.readbyqxmd.com/read/28437369/ethical-challenges-and-the-donation-physician-specialist-a-scoping-review
#4
Shavaun I MacDonald, Sam D Shemie
Deceased donation medicine involves unique ethical challenges. Physicians who are focused on deceased donation medicine as part of their practice can expect to encounter these challenges. The goal of this review is to identify and describe these challenges, highlight existing guidelines and policy regarding the management of these challenges and to describe how the donation physician role might promote ethical practice in deceased donation medicine. Themes of discussion include: communication with families, interprofessional conflict, donation physician personal characteristics, donation clinical processes, health resource allocation, research and education, and remuneration...
May 2017: Transplantation
https://www.readbyqxmd.com/read/28437368/end-of-life-conversations-with-families-of-potential-donors-leading-practices-in-offering-the-opportunity-for-organ-donation
#5
Sam D Shemie, Adrian Robertson, Janice Beitel, Jennifer Chandler, Ed Ferre, Janet Evans, Mathias Haun, Sylvia Torrance
No abstract text is available yet for this article.
May 2017: Transplantation
https://www.readbyqxmd.com/read/28437367/-effective-requesting-a-scoping-review-of-the-literature-on-asking-families-to-consent-to-organ-and-tissue-donation
#6
Jennifer A Chandler, Matthew Connors, Giles Holland, Sam D Shemie
BACKGROUND: Families are often asked to consent to the donation of their deceased relative's organs or tissues. These end-of-life conversations are important because they affect consent rates as well as the psychological impact of the decision for families. This scoping review of the literature on requesting family consent was prepared to support of the development of leading practice recommendations for end-of-life conversations with families of potential donors. A scoping review maps research activity in a field across a range of commentary and empirical study designs but does not attempt meta-synthesis of empirical data or quality assessment...
May 2017: Transplantation
https://www.readbyqxmd.com/read/28437219/factors-affecting-sexual-function-in-midlife-women-results-from-the-midlife-women-s-health-study
#7
Rebecca L Smith, Lisa Gallicchio, Jodi A Flaws
OBJECTIVE: The objective of this study was to estimate the importance of risk factors affecting sexual function in sexually active midlife women. MATERIALS AND METHODS: A cohort of 780 women undergoing the menopausal transition was surveyed each year for up to 7 years. Data were collected from sexually active women on sexual function, including frequencies of enjoyment, arousal, orgasm, passion for partner, satisfaction with partner, pain, lack of lubrication, fantasizing, and sexual activity...
February 28, 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/28437068/observing-the-overgrowth-of-a-second-metal-on-silver-cubic-seeds-in-solution-by-surface-enhanced-raman-scattering
#8
Yun Zhang, Jingyue Liu, Jaewan Ahn, Ting-Hui Xiao, Zhi-Yuan Li, Dong Qin
We report the development of an isocyanide-based molecular probe for in situ characterizing the overgrowth of a second metal on silver nanocrystal seeds in solution by surface-enhanced Raman scattering (SERS). As the first demonstration, we elucidate that the vibrational frequency of 2,6-dimethylphenyl isocyanide (2,6-DMPI) can serve as a distinctive reporter for capturing the nucleation of Pt on the edges of Ag nanocubes in the aqueous solution containing a Pt precursor, ascorbic acid, and poly(vinylpyrrolidone) under ambient condition...
April 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28435726/crystal-structure-of-2-aza-niumylmeth-yl-pyridinium-bis-hydrogen-squarate
#9
Nina Salamzadeh, Zeynep Demircioglu, Ufuk Korkmaz, Orhan Büyükgüngör
The asymmetric unit of the title compound, C6H10N2(2+)·2C4HO4(-), comprises two hydrogen squarate (Hsq(-); systematic name: 2-hy-droxy-3,4-dioxo-cyclo-butano-late) anions and a 2-(aza-niumylmeth-yl)pyridinium dication. The squaric acid mol-ecules each donate an H atom to the N atoms of the pyridine ring and the amino-methyl units of a 2-(amino-meth-yl)pyridine mol-ecule, forming the 1:2 salt. The Hsq(-) anions are linked by strong O-H⋯O hydrogen bonds and an N-H⋯O hydrogen bond links the 2-(aza-niumylmeth-yl)pyridinium cation to one of the squaric acid anions...
April 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28435006/horizontal-transfer-of-chromosomal-markers-mediated-by-the-large-conjugative-plasmid-pxo16-from-bacillus-thuringiensis-serovar-israelensis
#10
Lionel Makart, Florian Commans, Annika Gillis, Jacques Mahillon
pXO16, a large plasmid originating from Bacillus thuringiensis serovar israelensis, displays unique conjugation capacities: besides efficient self-transfer, it is able to mobilize and retro-mobilize non-conjugative plasmids, including those missing an oriT and/or a mob gene, also known as "non-mobilizable" plasmids. In this paper, another peculiar transfer property of pXO16 is described. This element is indeed able to transfer chromosomal loci at frequencies of ca. 10(-5)-10(-6) transconjugants/donor cell. Whereas most other chromosomal transfer systems occur via the integration of the conjugative elements into the chromosome prior to its transfer, pXO16 appears to transfer the chromosomal markers in the absence of physical integration, but rather through a "donation-type" mobilization...
April 20, 2017: Plasmid
https://www.readbyqxmd.com/read/28434852/p-%C3%A2-falciparum-malaria-prevalence-among-blood-donors-in-bamako-mali
#11
B Kouriba, A B Diarra, I Douyon, D T Diabaté, F Kamissoko, H Guitteye, M Baby, M A Guindo, O K Doumbo
AIM: Malaria parasite is usually transmitted to humans by Anopheles mosquitoes but it can also be transmitted through blood transfusion. Usually malaria transmission is low in African urban settings. In West Africa where the P. falciparum is the most predominant malaria species, there are limited measures to reduce the risk of blood transfusion malaria. The aim of this study was to evaluate the prevalence of P. falciparum malaria carriage among blood donors in the National Blood Center of Bamako, capital city of Mali...
April 20, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28433405/epidemiology-of-toxoplasma-gondii-among-blood-donors-in-iran-a-systematic-review-and-meta-analysis
#12
REVIEW
Akram Mansouri, Mohammad Reza Adhami Mojarad, Gholamreza Badfar, Lila Abasian, Shoboo Rahmati, Wesam Kooti, Mohammad Hossein YektaKooshali, Ali Soleymani, Milad Azami
INTRODUCTION: Asymptomatic Toxoplasma gondii transmitted from blood donors to receiving patients has become a concern. Numerous articles have been published on the epidemiology of T. gondii in blood donors in Iran and a systematic review of the results shows quite different findings, hence this study was conducted to determine the seroprevalence of T. gondii in Iranian blood donors using meta-analysis. METHODS: We searched for epidemiological studies that were published until July 2016 in eight English databases including: Scopus, PubMed, Ovid, Science Direct, Cochrane, Web of Science, Springer, Wiley Online Library, and four Iranian databases: Magiran, Iranmedex, SID and Medlib as well as Google Scholar...
March 29, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28433384/cold-ischemia-time-up-to-16-hours-has-little-impact-on-living-donor-kidney-transplant-outcomes-in-the-era-of-kidney-paired-donation
#13
Jagbir Gill, Caren Rose, Yayuk Joffres, Matthew Kadatz, John Gill
In living donor transplantation, cold ischemia time is a concern in transplants involving kidney paired donation. The impact of cold ischemia time over eight hours is unknown. Here we examined the association of cold ischemia time with delayed graft function and allograft loss among 48,498 living recipients in the Scientific Registry of Transplant Recipients registry. The incidence of delayed graft function was low but significantly higher among patients with longer cold ischemia times (0-2.0 hours: 3.3%; 2...
April 19, 2017: Kidney International
https://www.readbyqxmd.com/read/28433103/liver-transplantation-for-wilson-disease
#14
Ahsan Ahmad, Euriko Torrazza-Perez, Michael L Schilsky
Liver transplantation (LT) is a life-saving and curative treatment for Wilson disease (WD), providing restoration of function of the liver and mitigation of portal hypertension. Indications for LT in patients with WD include acute liver failure or end-stage liver disease not treatable by medical therapy. LT is also used to treat hepatocellular carcinoma when it develops in patients with WD when tumor resection is not feasible. LT solely for neurologic or psychiatric WD remains controversial. Living liver donation as well as cadaveric orthotopic and auxiliary LT are options for transplantation for WD...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28432863/prevalence-and-factors-associated-with-breast-milk-donation-in-banks-that-receive-human-milk-in-primary-health-care-units
#15
Tatiana Mota Xavier de Meneses, Maria Inês Couto de Oliveira, Cristiano Siqueira Boccolini
OBJECTIVE: To estimate the prevalence and to analyze factors associated with breast milk donation at primary health care units in order to increase the human milk bank reserves. METHODS: Cross-sectional study carried out in 2013 in Rio de Janeiro, Brazil. A representative sample of 695 mothers of children younger than 1 year attended to at the nine primary health care units with human milk donation services were interviewed. A hierarchical approach was used to obtain adjusted prevalence ratios (APR) by Poisson regression with robust variance...
April 19, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28432827/parenting-stress-and-its-association-with-perceived-agreement-about-the-disclosure-decision-in-parents-following-donor-conception
#16
Anja J Gebhardt, Gunilla Sydsjö, Agneta Skoog Svanberg, Astrid Indekeu, Claudia Lampic
For many donor-conceiving heterosexual parents, the process of deciding whether and what to tell children about their genetic origin is challenging. We hypothesized that incomplete couple agreement about disclosure could be associated with parenting stress. The aim of the study was to investigate (1) parenting stress levels among heterosexual parents of young children following gamete donation and (2) whether parenting stress is related to perceived agreement about disclosure of the donor conception to the children MATERIAL AND METHODS: This study is part of the longitudinal multicenter Swedish Study on Gamete Donation and included a total of 213 heterosexual parents with children age 1-4 years following oocyte donation (n = 103) and sperm donation (n = 110)...
April 22, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28432725/synthesis-and-biological-potency-of-anilino-triazine-insecticides
#17
Timothy C Johnson, Annette V Brown, Kristy K Bryan, Katherine K Guenthenspberger, Ricky Hunter, Timothy P Martin, Noormohamed Niyaz, Gene F Tisdell, Tony Trullinger
BACKGROUND: An insecticide screening effort identified N-(4-bromophenyl)-4,6-bis(2,2,2-trifluoroethoxy)-1,3,5-triazine-2-amine as having weak potency against two Lepidopteran species, Helicoverpa zea and Spodoptera exigua. A structure activity relationship study about the trifluoroethoxy substituents and the aniline of this compound was carried out in an effort to improve insecticidal potency. RESULTS: Initially, a series of analogs bearing various substituents on the aniline were prepared and the insecticidal potency was evaluated against Helicoverpa zea and Spodoptera exigua in greenhouse diet feeding assays...
April 22, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28432454/cobalt-tetradehydrocorrins-coordinated-by-imidazolate-like-histidine-in-the-heme-pocket-of-horseradish-peroxidase
#18
Koji Oohora, Ning Tang, Yoshitsugu Morita, Takashi Hayashi
Horseradish peroxidase was reconstituted with cobalt tetradehydrocorrin, rHRP(Co(TDHC)), as a structural analog of cobalamin coordinated with an imidazolate-like His residue, which is generally seen in native enzymes. In contrast to the previously reported cobalt tetradehydrocorrin-reconstituted myoglobin, rMb(Co(TDHC)), the HRP matrix was expected to provide strong axial ligation by His170 which has imidazolate character. rHRP(Co(II)(TDHC)) was characterized by EPR and its reaction with reductants indicates a negative shift of its redox potential compared to rMb(Co(TDHC))...
April 21, 2017: Journal of Biological Inorganic Chemistry: JBIC
https://www.readbyqxmd.com/read/28431285/two-benzoyl-coumarin-amide-fluorescence-chemosensors-for-cyanide-anions
#19
Zian Wang, Qianqian Wu, Jiale Li, Shuang Qiu, Duxia Cao, Yongxiao Xu, Zhiqiang Liu, Xueying Yu, Yatong Sun
Two new benzoyl coumarin amide derivatives with ortho hydroxyl benzoyl as terminal group have been synthesized. Their photophysical properties and recognition properties for cyanide anions in acetonitrile have also been examined. The influence of electron donating diethylamino group in coumarin ring and hydroxyl in benzoyl group on recognition properties was explored. The results indicate that the compounds can recognize cyanide anions with obvious absorption and fluorescence spectral change and high sensitivity...
April 13, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28431205/cyclization-of-ynamide-tethered-1-3-8-triynes
#20
Venkata R Sabbasani, Hyunjin Lee, Peipei Xie, Yuanzhi Xia, Daesung Lee
A facile thermal cyclization of ynamide-tethered 1,3,8-triynes to form 3,5,6,7-tetrahydro-1H-pyrano[3,4-c]pyridine skeleton is described. Although the mechanism of this unusual reaction is yet to be defined the formation of either a strained keteniminium or a biradical intermediate followed a 1,5-hydride or -hydrogen shift is tentatively proposed as the key elementary steps in the reaction sequence. Appropriate electronic activation at the carbon center donating a hydride or hydrogen is crucial for successful cyclization...
April 21, 2017: Chemistry: a European Journal
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