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Plasma donation

Hui Xia, Briony C Strachan, Sean C Gifford, Sergey S Shevkoplyas
Leukocyte reduction of donated blood products substantially reduces the risk of a number of transfusion-related complications. Current 'leukoreduction' filters operate by trapping leukocytes within specialized filtration material, while allowing desired blood components to pass through. However, the continuous release of inflammatory cytokines from the retained leukocytes, as well as the potential for platelet activation and clogging, are significant drawbacks of conventional 'dead end' filtration. To address these limitations, here we demonstrate our newly-developed 'controlled incremental filtration' (CIF) approach to perform high-throughput microfluidic removal of leukocytes from platelet-rich plasma (PRP) in a continuous flow regime...
October 24, 2016: Scientific Reports
Izabella Surowiec, Lisbeth Ärlestig, Solbritt Rantapää-Dahlqvist, Johan Trygg
OBJECTIVE: The early diagnosis of rheumatoid arthritis (RA) is desirable to install treatment to prevent disease progression and joint destruction. Autoantibodies and immunological markers pre-date the onset of symptoms by years albeit not all patients will present these factors, even at disease onset. Additional biomarkers would be of high value to improve early diagnosis and understanding of the process, leading to disease development. METHODS: Plasma samples donated before the onset of RA were identified in the Biobank of Northern Sweden, a collection within national health survey programs...
2016: PloS One
Jose A Cancelas, Neeta Rugg
No abstract text is available yet for this article.
October 5, 2016: EBioMedicine
Mars Stone, Donald Brambilla, Karla Murcia, Melanie Dimapasoc, Sherri Cyrus, Ritchard G Cable, Joseph E Kiss, Michael P Busch
BACKGROUND: Understanding the effect of delayed processing of whole blood on plasma ferritin will inform the feasibility of both routine ferritin testing in donors and clinical research study design. STUDY DESIGN AND METHODS: Whole blood tubes drawn from 16 donors were held at 4°C and centrifuged at 24-hour intervals to assess plasma ferritin concentration up to 5 days after draw. Intraindividual variation over time was measured in 21 healthy donors in blood samples collected weekly for 4 weeks and then at 12 weeks...
October 2016: Transfusion
Yoshihiro Fujimori, Yoshihiro Bouike, Kenneth Nollet, Hitoshi Miki
On January 17, 1995, a magnitude 7.3 earthquake occurred in southern Hyogo Prefecture, a substantially urban area of Japan's main island, Honshu. Now known as the Hanshin-Awaji Earthquake, this disaster damaged or destroyed 639 686 houses and took 6434 lives. Within the disaster area, the Japanese Red Cross (JRC) Hyogo Blood Center had regional responsibilities for collecting, testing, processing, storing, and distributing blood components, including red blood cells (RBCs), fresh frozen plasma (FFP) and platelet concentrates (PLTs)...
October 2016: Transfusion and Apheresis Science
Christian Wiese, Eva Große Maestrup, Fabian Galla, Dirk Schepmann, Achim Hiller, Steffen Fischer, Friedrich-Alexander Ludwig, Winnie Deuther-Conrad, Cornelius K Donat, Peter Brust, Lars Büter, Uwe Karst, Bernhard Wünsch
The imaging of σ1 receptors in the brain by fluorinated radiotracers will be used for the validation of σ1 receptors as drug targets as well as for differential diagnosis of diseases in the central nervous system. The biotransformation of four homologous fluorinated PET tracers 1'-benzyl-3-(ω-fluoromethyl to ω-fluorobutyl)-3H-spiro[2]benzofuran-1,4'-piperidine] ([(18) F]1-4) was investigated. In silico studies using fast metabolizer (FAME) software, electrochemical oxidations, in vitro studies with rat liver microsomes, and in vivo metabolism studies after application of the PET tracers [(18) F]1-4 to mice were performed...
September 28, 2016: ChemMedChem
Y-C Lee, C-C Hung, A Cheng, W-C Liu, P-Y Wu, S-P Yang, J-Y Zhang, Y-Z Luo, H-Y Chang, H-Y Sun, S-C Chang
BACKGROUND: With the introduction of combination antiretroviral therapy (cART) that has significantly improved survival, human immunodeficiency virus (HIV)-positive patients may be potential organ donors to HIV-positive recipients in a few countries. Organ shortage remains a challenge for organ transplantation in Taiwan, where organ donation by HIV-positive patients remains prohibited by law. METHODS: We assessed the willingness of organ donation (should they be pronounced brain death, and the ban on HIV-positive organ donation be lifted) among HIV-positive patients who received regular HIV care at a university hospital in a cross-sectional survey between May and August 2015 with the use of an anonymous, self-administered questionnaire interview...
September 24, 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
Akbar Ahmad, Csaba Szabo
Hydrogen sulfide (H2S) exerts beneficial as well as deleterious effects in various models of critical illness. Here we tested the effect of two different pharmacological interventions: (a) inhibition of H2S biosynthesis using the cystathionine-beta-synthase (CBS)/cystathionine-gamma-lyase (CSE) inhibitor aminooxyacetic acid (AOAA) and the mitochondrially targeted H2S donor [10-oxo-10-[4-(3-thioxo-3H-1,2-dithiol-5-yl)phenoxy]decyl]triphenyl-phosphonium (AP39). A 30% body surface area burn injury was induced in anesthetized mice; animals were treated with vehicle, AOAA (10mg/kg i...
September 14, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
Fahd A Al-Khamis
OBJECTIVES: To determine the relationship between Vitamin B12 levels and thyroid hormones in patients with multiple sclerosis (MS). MATERIALS AND METHODS: One hundred and ten patients with MS were recruited for this study after Institutional Review Board approval. All patients signed a written informed consent form and donated a single blood sample. Plasma Vitamin B12 levels, triiodothyronine (T3), and thyroxine (T4) hormone levels were measured. Data were analyzed using the Statistical Package for Social Sciences (SPSS) software...
September 2016: Journal of Family & Community Medicine
Friedrich-Alexander Ludwig, René Smits, Steffen Fischer, Cornelius K Donat, Alexander Hoepping, Peter Brust, Jörg Steinbach
Both enantiomers of [(18)F]flubatine are promising radioligands for neuroimaging of α4β2 nicotinic acetylcholine receptors (nAChRs) by positron emission tomography (PET). To support clinical studies in patients with early Alzheimer's disease, a detailed examination of the metabolism in vitro and in vivo has been performed. (+)- and (-)-flubatine, respectively, were incubated with liver microsomes from mouse and human in the presence of NADPH (β-nicotinamide adenine dinucleotide 2'-phosphate reduced tetrasodium salt)...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
M M Hoque, S D Adnan, S Karim, M A Mamun, S Nandy, M A Faruki, K Islam
Iron stores in the body exist primarily in the form of ferritin. Small amounts of ferritin secreted into the plasma and plasma ferritin is positively correlated with the size of the total body iron stores. The present study conducted to determine the iron status using the serum ferritin level among healthy Bangladeshi blood donors. The present cross sectional study was conducted in the Department of Transfusion Medicine, Dhaka Medical College, Dhaka, Bangladesh from July 2011 to June 2012. Blood donor signed informed consent and has satisfactory pre-donation health assessment and satisfactory post-donation blood test results were included in the study...
July 2016: Mymensingh Medical Journal: MMJ
David Donate, Rozenn Thaëron
PURPOSE: To compare the visual outcomes with energy close to the plasma threshold and energy at the standard set-up in small incision lenticule extraction (SMILE). METHODS: This retrospective, non-randomized, consecutive clinical case series included 486 eyes of 243 patients who underwent SMILE and were subdivided into two groups depending on the laser energy settings: the standard energy group (164 eyes) using a laser cut energy index of 36 (180 nJ), and the plasma threshold group (322 eyes) using a cut energy index of 20 (100 nJ, close to plasma threshold)...
August 1, 2016: Journal of Refractive Surgery
Wei Zhen Chow, Abdul Hamid Bon, Sheila Keating, Fread Anderios, Hazwan Abdul Halim, Yutaka Takebe, Adeeba Kamarulzaman, Michael P Busch, Kok Keng Tee
Transfusion-transmissible infections including HIV-1 continue to pose major risks for unsafe blood transfusions due to both window phase infections and divergent viruses that may not be detected by donor screening assays. Given the recent emergence of several HIV-1 circulating recombinant forms (CRFs) in high-risk populations in the Southeast Asia region, we investigated the genetic diversity of HIV-1 among the blood donors in Kuala Lumpur, Malaysia. A total of 211 HIV-positive plasma samples detected among 730,188 donations to the National Blood Centre between 2013 and 2014 were provided (90...
2016: PloS One
C R Seed, P Kiely, V C Hoad, A J Keller
BACKGROUND AND OBJECTIVES: We previously published a model to estimate the residual risk (RR) for occult hepatitis B infection (OBI) in the absence of universal anti-HBc testing. To incorporate new information on the epidemiology of OBI, we describe model refinements and estimate a more accurate HBV RR due to OBI in Australia. MATERIALS AND METHODS: In our original model, the OBI risk, p(OBI), was defined by the rate of 'non-detection' by the HBV DNA screening test in use, p(NAT non-detection), and the average infectivity of blood components from OBI donors, p(transmission)...
August 26, 2016: Vox Sanguinis
D Keith Branham, Tyrone F Borders, Katharine E Stewart, Geoffrey M Curran, Brenda M Booth
African Americans (AAs) who use cocaine in the Southern region of the U.S. have a relatively high risk of HIV and need for HIV testing. Among this group, those residing in rural areas may have less favorable opinions about common HIV testing sites, which could inhibit HIV testing. We examined rural/urban variations in their acceptability of multiple HIV testing sites (private physician clinic, local health department, community health center, community HIV fair, hospital emergency department, blood plasma donation center, drug abuse treatment facility, and mobile van or community outreach worker)...
August 24, 2016: AIDS and Behavior
Aslı Korur, Ilknur Kozanoglu, Nurhilal Buyukkurt, Mahmut Yeral, Fatih Kandemir, Cigdem Gereklioglu, Cagla Sariturk, Suheyl Asma, Soner Solmaz, Can Boga, Hakan Ozdogu
BACKGROUND AND AIM: Today, voluntary donation of peripheral blood stem cells by healthy donors for allogeneic hemopoietic cell transplantation is common worldwide. Such donations are associated with small but measurable risks of morbidity and mortality. Most complications are associated with citrate infusion during cell collection. We studied the effects of citrate infusion on the QTc and other vital parameters during and after peripheral stem cell apheresis in volunteers. METHOD: To ensure that donors were healthy, screening included taking a detailed medical history, physical examination, and laboratory measurements of plasma calcium and magnesium...
August 20, 2016: Journal of Clinical Apheresis
Nor Mohd Taufek, David Cartwright, Amitha Hewavitharana, Pieter Koorts, Helen McConachy, Nick Shaw, Karen Whitfield, Mark Davies
AIM: To investigate the effect of the pasteurisation process on trace elements in donor breast milk. METHOD: Premature infants often receive donor breast milk when the mother is unable to produce sufficient breast milk. It is widely accepted that donor milk has considerable advantages over formula milk.1 The Royal Brisbane and Women's Hospital (RBWH) has a milk bank that receives milk donated by women which undergoes a pasteurisation process.2 This study investigated the effect of pasteurisation on a range of trace elements in donor milk...
September 2016: Archives of Disease in Childhood
A Heather Eliassen, Erica T Warner, Bernard Rosner, Laura C Collins, Andrew H Beck, Liza M Quintana, Rulla M Tamimi, Susan E Hankinson
Experimental evidence supports a protective role of 25-hydroxyvitamin D [25(OH)D] in breast carcinogenesis, but epidemiologic evidence is inconsistent. Whether plasma 25(OH)D interacts with breast tumor expression of vitamin D receptor (VDR) and retinoid X receptor-α (RXR) has not been investigated. We conducted a nested case-control study in the Nurses' Health Study, with 1,506 invasive breast cancer cases diagnosed after blood donation in 1989-1990, 417 of whom donated a second sample in 2000-2002. VDR and RXR expression were assessed by immunohistochemical staining of tumor microarrays (n = 669 cases)...
September 15, 2016: Cancer Research
T Thiele, T Alt-Mayer, A Greinacher, J Bux
BACKGROUND: A 100% apheresis platelet supply is considered to increase transfusion safety by lowering donor exposures for transfusion recipients. We performed a risk benefit analysis to contrast the reduction of donor exposures and the risk of contaminated blood products in the nation-wide inventory with the donor risks associated with a switch to a 100% apheresis platelet supply in Germany. METHODS: Donor exposures and the number of contaminated blood products resulting from HIV-like, HBV-like, HCV-like pathogens and two theoretical agents with infection rates of 10 and 1000 in 100 000, respectively, were calculated for a 100% apheresis platelet supply in Germany based on the 2006-2012 hemovigilance reports...
July 19, 2016: Vox Sanguinis
Alexandre Delamou, Nyankoye Yves Haba, Almudena Mari-Saez, Pierre Gallian, Maya Ronse, Jan Jacobs, Bienvenu Salim Camara, Kadio Jean-Jacques Olivier Kadio, Achille Guemou, Jean Pe Kolie, Maaike De Crop, Patricia Chavarin, Chantal Jacquot, Catherine Lazaygues, Anja De Weggheleire, Lutgarde Lynen, Johan van Griensven
Although convalescent plasma (CP) transfusion was prioritized among potential Ebola treatments by the World Health Organization, there were concerns on the feasibility of its implementation. We report on the successful organization of donor mobilization and plasma collection as part of the Ebola-Tx clinical trial from November 2014 to July 2015 in Conakry, Guinea. Project implementation registers, tools and reports, mission reports, and minutes of research team meetings were used to reconstruct the sequence of events on how donor mobilization was organized, plasmapheresis was set up, and how effective this approach was in collecting CP...
September 7, 2016: American Journal of Tropical Medicine and Hygiene
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