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https://www.readbyqxmd.com/read/28586527/generation-of-the-membrane-potential-and-its-impact-on-the-motility-atp-production-and-growth-in-campylobacter-jejuni
#1
Anne-Xander van der Stel, Fred C Boogerd, Steven Huynh, Craig T Parker, Linda van Dijk, Jos P M van Putten, Marc M S M Wösten
The generation of a membrane potential (Δψ), the major constituent of the proton motive force (pmf), is crucial for ATP synthesis, transport of nutrients and flagellar rotation. Campylobacter jejuni harbors a branched electron transport chain, enabling respiration with different electron donors and acceptors. Here, we demonstrate that a relatively high Δψ is only generated in the presence of either formate as electron donor or oxygen as electron acceptor, in combination with an acceptor/donor, respectively...
June 6, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28579040/autonomy-and-self-esteem-of-women-who-donate-to-an-oocyte-cryopreservation-bank-in-the-netherlands
#2
Marjolein R Bakker, Joyce Maas, Marrie H Bekker, Annelien L Bredenoord, Bart C Fauser, Annelies M Bos
Worldwide, oocyte donors donate voluntarily or receive varying amounts of money for donation. This raises ethical questions regarding the appropriateness of financial compensation, and the possibility of undue inducement and exploitation of oocyte donors. Are these donors capable of making an independent, well-considered decision? Regarding this matter, it is important to examine aspects such as autonomy-connectedness and self-esteem. In this cross-sectional study, demographic characteristics and donation motivations were assessed in 92 women who attended the University Medical Center (UMC) Utrecht as potential oocyte donors between June 2012 and July 2016...
May 17, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28558214/substitution-effects-on-the-photoinduced-charge-transfer-properties-of-novel-perylene-3-4-9-10-tetracarboxylic-acid-derivatives
#3
Damla Inan, Rajeev K Dubey, Nick Westerveld, Jorrit Bleeker, Wolter F Jager, Ferdinand C Grozema
We report here the synthesis and photophysical study of a series of electron donor-acceptor molecules, in which electron-donating 4-methoxyphenoxy groups are attached to the 1,7-bay positions of four different perylene tetracarboxylic acid derivatives, namely, perylene tetraesters 1, perylene monoimide diesters 2, perylene bisimides 3, and perylene monobenzimidazole monoimides 4. These perylene derivatives are used because of their increasing order of electron-accepting capability upon moving from 1 to 4. Two additional donor-acceptor molecules are synthesized by linking electron-donating 4-methoxyphenyl groups to the imide position of perylene monoimide diester 2 and perylene bisimide 3...
June 14, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28557101/the-association-between-interval-from-acceptance-to-first-time-donation-missed-first-appointment-and-future-donation-behaviour
#4
S A Mousavi, B Hermundstad, T R Knutsen, A H Llohn
BACKGROUND AND OBJECTIVES: We examined the association of the interval between the date an individual is accepted for blood donation and the date of first donation (IFD-interval, index-to-first-time donation interval) and missed first appointment with future donation behaviour among new donors. These two variables have not been analysed in previous studies of donation behaviour among new donors. METHODS: Categories were generated for age (18-29 vs 30-65 years), missed-appointment status (no-show vs same-day cancellation) and the IFD-interval [short (≤median time) vs long (>median time)]...
May 29, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28550979/status-of-blood-transfusion-in-world-health-organization-eastern-mediterranean-region-who-emr-successes-and-challenges
#5
REVIEW
Arezoo Darbandi, Pargol Mashati, Amir Yami, Arshia Gharehbaghian, Mehdi Tabrizi Namini, Ahmad Gharehbaghian
BACKGROUND: Blood products are used for patient treatment and survival in the cases of major surgery, hematological disorders or cancer therapy. Presently the main blood components are not yet replaceable by artificial products and all activities related to blood transfusion is highly dependent on the healthcare development of each country. The World Health Organization Eastern Mediterranean Region (WHO-EMR) comprises of 21 member states with variable socio-economic status effective on blood transfusion activities...
May 8, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28549399/a-systematic-review-investigating-psychosocial-aspects-of-egg-sharing-in-the-united-kingdom-and-their-potential-effects-on-egg-donation-numbers
#6
Timothy Bracewell-Milnes, Srdjan Saso, Hossam Abdalla, Meen-Yau Thum
This review aims to provide an up-to-date knowledge of the psychosocial aspects of egg donation from the perspectives of the egg share donor and their recipient. It explores the motives, experiences and attitudes of egg sharers and their views towards donor anonymity and disclosure. Conclusions are made on how these findings can guide clinical practice and improve egg sharing numbers. A systematic search of peer-reviewed journals of four computerized databases was undertaken. Eleven studies were included in the review...
May 26, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28547759/blood-donors-attitudes-towards-voluntary-non-remunerated-donation-in-trinidad-and-tobago
#7
K S Charles, A Poon King, A Ramai, K Rajnath, D Ramkissoon, S Ramkissoon, C Ramlal, K Ramnarine, K Rampersad, G Legall, S Pooransingh, A D Chantry
OBJECTIVES: To assess the attitude towards voluntary non-remunerated blood donation among blood donors in Trinidad and Tobago (TRT). BACKGROUND: Blood donors in TRT are either family replacement (F/R, 87%) or remunerated (13%). There is chronic blood shortage and high seroreactivity for transfusion-transmissible infections (TTI) in donors. Converting existing to voluntary non-remunerated donors (VNRD) reduces the need to recruit news donors in achieving 100% VNRD...
May 26, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28542841/blood-donors-perceptions-motivators-and-deterrents-in-sub-saharan-africa-a-scoping-review-of-evidence
#8
REVIEW
Lucy Asamoah-Akuoko, Oliver W Hassall, Imelda Bates, Henrik Ullum
Achieving an adequate blood supply in Sub-Saharan Africa (SSA) through donor mobilization and retention is crucial. Factors that motivate or deter blood donors vary according to beliefs and social norms. Understanding the factors that influence blood donation behaviour in SSA is vital to developing effective strategies to address blood donor motivation and retention. This review of 35 studies from 16 SSA countries collates available evidence concerning the perceptions, motivators and deterrents that influence blood donors in SSA...
June 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28527046/on-harm-thresholds-and-living-organ-donation-must-the-living-donor-benefit-on-balance-from-his-donation
#9
Nicola Jane Williams
For the majority of scholars concerned with the ethics of living organ donation, inflicting moderate harms on competent volunteers in order to save the lives or increase the life chances of others is held to be justifiable provided certain conditions are met. These conditions tend to include one, or more commonly, some combination of the following: (1) The living donor provides valid consent to donation. (2) Living donation produces an overall positive balance of harm-benefit for donors and recipients which cannot be obtained in a less harmful manner...
May 19, 2017: Medicine, Health Care, and Philosophy
https://www.readbyqxmd.com/read/28515024/knowledge-attitude-and-practice-towards-blood-donation-among-health-care-providers-in-hospitals-at-bahir-dar-city-ethiopia
#10
Bayeh Abera, Beyan Mohammed, Wendmagegn Betela, Reshid Yimam, Adam Oljira, Merhab Ahmed, Wubet Tsega, Wondemagegn Mulu, Endalew Yizengaw
Like other sub-Saharan Africa, in Ethiopia there is a shortage of adequate and safe blood supplies. Health care providers are potential resource and promoter of voluntary blood donation. This study was conducted to determine the knowledge, attitude and practice towards blood donation among health care providers in Bahir Dar City, Ethiopia. Paper based questionnaire was distributed to 276 health care providers from May 01 to June 30, 2016. Overall, 42.8% had donated blood at least once. Of these, males accounted for 60%...
April 26, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28510355/the-national-landscape-of-living-kidney-donor-follow-up-in-the-united-states
#11
Macey L Henderson, Alvin G Thomas, Ashton Shaffer, Allan B Massie, Xun Luo, Courtenay M Holscher, Tanjala S Purnell, Krista Lentine, Dorry L Segev
In 2013, OPTN/UNOS mandated that transplant centers collect data on living kidney donors (LKDs) at 6-months, 1-year, and 2-years post-donation, with policy-defined thresholds for the proportion of complete living donor follow-up (LDF) data submitted in a timely manner (60 days before or after the expected visit date). While mandated, it was unclear how centers across the country would perform in meeting thresholds, given potential donor and center-level challenges of LDF. To better understand the impact of this policy, we studied SRTR data for 31,615 LKDs between 1/2010-6/2015, comparing proportions of complete and timely LDF form submissions pre- and post-policy implementation...
May 16, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28505547/synthesis-of-indole-analogs-as-potent-%C3%AE-glucuronidase-inhibitors
#12
Mohd Syukri Baharudin, Muhammad Taha, Syahrul Imran, Nor Hadiani Ismail, Fazal Rahim, Muhammad Tariq Javid, Khalid Mohammed Khan, Muhammad Ali
Natural products are the main source of motivation to design and synthesize new molecules for drug development. Designing new molecules against β-glucuronidase inhibitory is utmost essential. In this study indole analogs (1-35) were synthesized, characterized using various spectroscopic techniques including (1)H NMR and EI-MS and evaluated for their β-glucuronidase inhibitory activity. Most compounds were identified as potent inhibitors for the enzyme with IC50 values ranging between 0.50 and 53.40μM, with reference to standard d-saccharic acid 1,4-lactone (IC50=48...
June 2017: Bioorganic Chemistry
https://www.readbyqxmd.com/read/28501802/stability-of-proteins-in-dried-blood-spot-biobanks
#13
Johan Björkesten, Stefan Enroth, Qiujin Shen, Lotta Wik, David Hougaard, Arieh Cohen, Lene Sörensen, Vilmantas Giedraitis, Martin Ingelsson, Anders Larsson, Masood Kamali-Moghaddam, Ulf Landegren
An important motivation for the construction of biobanks is to discover biomarkers that identify diseases at early, potentially curable stages. This will require biobanks from large numbers of individuals, preferably sampled repeatedly, where the samples are collected and stored under conditions that preserve potential biomarkers. Dried blood samples are attractive for biobanking because of the ease and low cost of collection and storage. Here we have investigated their suitability for protein measurements...
May 13, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28489287/broken-chains-and-reneging-a-review-of-1-748-kidney-paired-donation-transplants
#14
Nick Cowan, H Albin Gritsch, Nima Nisseri, Joe Sinacore, Jeffrey Veale
Concerns regarding the potential for broken chains and reneges within kidney paired donation (KPD) and its effect on chain length have been previously raised. While these concerns have been tested in simulation studies, "real world" data has yet to be evaluated. The purpose of this study was to evaluate the actual rate and cause of broken chains within a large KPD program. All patients undergoing renal transplantation through the National Kidney Registry from 2008 through May 2016 were included for analysis...
May 10, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28488803/promises-and-challenges-in-continuous-tracking-utilizing-amino-acids-in-skin-secretions-for-active-multi-factor-biometric-authentication-for-cybersecurity
#15
Juliana Agudelo, Vladimir Privman, Jan Halámek
We consider a new concept of biometric-based cybersecurity systems for active authentication by continuous tracking, which utilizes biochemical processing of metabolites present in skin secretions. Skin secretions contain a large number of metabolites and small molecules that can be targeted for analysis. Here we argue that amino acids found in sweat can be exploited for the establishment of an amino acid profile capable of identifying an individual user of a mobile or wearable device. Individual and combinations of amino acids processed by biocatalytic cascades yield physical (optical or electronic) signals, providing a time-series of several outputs that, in their entirety, should suffice to authenticate a specific user based on standard statistical criteria...
May 10, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28486562/exogenous-alpha-1-antitrypsin-down-regulates-serpina1-expression
#16
Ahmad Karadagi, Helene Johansson, Helen Zemack, Sandeep Salipalli, Lisa-Mari Mörk, Kristina Kannisto, Carl Jorns, Roberto Gramignoli, Stephen Strom, Knut Stokkeland, Bo-Göran Ericzon, Danny Jonigk, Sabina Janciauskiene, Greg Nowak, Ewa C S Ellis
The main goal of the therapy with purified human plasma alpha1-antitrypsin (A1AT) is to increase A1AT levels and to prevent lungs from elastolytic activity in patients with PiZZ (Glu342Lys) A1AT deficiency-related emphysema. Potential hepatic gains of this therapy are unknown. Herein, we investigated the effect of A1AT therapy on SERPINA1 (gene encoding A1AT) expression. The expression of SERPINA1 was determined in A1AT or A1AT plus Oncostatin M (OSM) treated primary human hepatocytes isolated from liver tissues from A1AT deficient patients and control liver tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28467235/applying-the-health-belief-model-and-an-integrated-behavioral-model-to-promote-breast-tissue-donation-among-asian-americans
#17
Autumn Shafer, Kelly Kaufhold, Yunjuan Luo
An important part in the effort to prevent, treat, and cure breast cancer is research done with healthy breast tissue. The Susan G. Komen for the Cure Tissue Bank at Indiana University Simon Cancer Center (KTB) encourages women to donate a small amount of healthy breast tissue and then provides that tissue to researchers studying breast cancer. Although KTB has a large donor base, the volume of tissue samples from Asian women is low despite prior marketing efforts to encourage donation among this population...
May 3, 2017: Health Communication
https://www.readbyqxmd.com/read/28449623/why-search-for-a-sperm-donor-online-the-experiences-of-women-searching-for-and-contacting-sperm-donors-on-the-internet
#18
Vasanti Jadva, Tabitha Freeman, Erika Tranfield, Susan Golombok
Whilst studies have examined the experiences of women who use clinic donors, to date there has been limited research investigating women's motivations and experiences of searching for a sperm donor online. A total of 429 women looking for a sperm donor on Pride Angel (a website that facilitates contact between donors and recipients) completed an online survey. Fifty-eight percent (249) saw advantages of obtaining donated sperm online with the most common advantage reported as being able to connect with and meet the donor (n = 50 (24%))...
April 28, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28394024/a-brief-motivational-interview-promotes-internal-motivation-to-donate-blood-among-young-adults-with-and-without-a-prior-donation-history
#19
Irina E Livitz, Kristen R Fox, Lina K Himawan, Christopher R France
BACKGROUND: Recruitment and retention of first-time and repeat donors is essential to maintain a stable blood supply. Recent evidence has shown that promoting internal motivation may be an effective strategy to enhance donation behavior. We tested the efficacy of an in-person motivational interview at increasing internal motivation and intention to donate. STUDY DESIGN AND METHODS: A sample of 219 donors and nondonors (69.4% female; mean ± SD age, 19.2 ± 1...
April 10, 2017: Transfusion
https://www.readbyqxmd.com/read/28339737/a-novel-chronic-opioid-monitoring-tool-to-assess-prescription-drug-steady-state-levels-in-oral-fluid
#20
Naum Shaparin, Neel Mehta, Frank Kunkel, Richard Stripp, Damon Borg, Elizabeth Kolb
Objective. : Interpretation limitations of urine drug testing and the invasiveness of blood toxicology have motivated the desire for the development of simpler methods to assess biologically active drug levels on an individualized patient basis. Oral fluid is a matrix well-suited for the challenge because collections are based on simple noninvasive procedures and drug concentrations better correlate to blood drug levels as oral fluid is a filtrate of the blood. Well-established pharmacokinetic models were utilized to generate oral fluid steady state concentration ranges to assess the interpretive value of the alternative matrix to monitor steady state plasma oxycodone levels...
February 23, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
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