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https://www.readbyqxmd.com/read/28936148/the-potential-anticoagulant-property-of-caulerpa-lentillifera-crude-extract
#1
Althea R Arenajo, Adrian P Ybañez, Maria Maichol P Ababan, Charlotte E Villajuan, May Rose M Lasam, Chiqui P Young, Julie Lynn A Reyes
BACKGROUND: Anticoagulants have been used in the treatment of several circulatory diseases and thrombotic disorders, and in the blood sampling for hematologic analysis. Sulfated polysaccharides (SP), which have anticoagulant properties, are found in most seaweeds, including Caulerpa spp. OBJECTIVE: The study generally aimed to evaluate the potential anticoagulant property of Caulerpa lentillifera. METHODOLOGY: The whole plant of fresh C. lentillifera was washed thoroughly with distilled water and manually expressed to obtain the extract...
July 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28930996/assessment-of-the-anticoagulant-and-anti-inflammatory-properties-of-endothelial-cells-using-3d-cell-culture-and-non-anticoagulated-whole-blood
#2
Riccardo Sfriso, Anjan Bongoni, Yara Banz, Nikolai Klymiuk, Eckhard Wolf, Robert Rieben
In vivo, endothelial cells are crucial for the natural anticoagulation of circulating blood. Consequently, endothelial cell activation leads to blood coagulation. This phenomenon is observed in many clinical situations, like organ transplantation in the presence of pre-formed anti-donor antibodies, including xenotransplantation, as well as in ischemia/reperfusion injury. In order to reduce animal experimentation according to the 3R standards (reduction, replacement and refinement), in vitro models to study the effect of endothelial cell activation on blood coagulation would be highly desirable...
September 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28929945/innovative-pcr-without-dna-extraction-for-african-sickle-cell-disease-diagnosis
#3
L Detemmerman, S Olivier, V Bours, F Boemer
OBJECTIVES: Hemoglobin (Hb) disorders consist of thalassemia and Hb structural variants, of which the major forms are associated with severe anemia and/or vascular occlusion. Current diagnostic techniques are highly accurate and mostly based on isoelectric focusing, high-performance liquid chromatography or mass spectrometry, which often require advanced laboratory equipment. In sub-Saharan Africa, the Hb disorders are mainly associated to the pathological variants hemoglobin S (HbS) and HbC...
September 20, 2017: Hematology (Amsterdam, Netherlands)
https://www.readbyqxmd.com/read/28926988/quality-assessment-of-platelet-rich-fibrin-like-matrix-prepared-from-whole-blood-samples-after-extended-storage
#4
Hideo Kawabata, Kazushige Isobe, Taisuke Watanabe, Toshimitsu Okudera, Masayuki Nakamura, Masashi Suzuki, Jietsu Ryu, Yutaka Kitamura, Hajime Okudera, Kazuhiro Okuda, Koh Nakata, Tomoyuki Kawase
The platelet-rich fibrin-like matrix (PRFM) is usually prepared onsite and immediately used for regenerative therapy. Nonetheless, to meet the clinical necessity of preserving the PRFM without quality deterioration, we developed a method for preparation of PRFMs from short-term-stored whole blood (WB) samples. In this study, to evaluate the practical expiration date of storage, we extended the storage time of WB samples from 2 to 7 days and assessed the quality of the resulting PRFMs. WB samples collected with acid-citrate-dextrose were stored with gentle agitation at ambient temperature...
September 18, 2017: Biomedicines
https://www.readbyqxmd.com/read/28918045/cationic-nanoliposomes-meet-mrna-efficient-delivery-of-modified-mrna-using-hemocompatible-and-stable-vectors-for-therapeutic-applications
#5
Tatjana Michel, Daniel Luft, Meike-Kristin Abraham, Sabrina Reinhardt, Martha L Salinas Medina, Julia Kurz, Martin Schaller, Meltem Avci-Adali, Christian Schlensak, Karlheinz Peter, Hans Peter Wendel, Xiaowei Wang, Stefanie Krajewski
Synthetically modified mRNA is a unique bioactive agent, ideal for use in therapeutic applications, such as cancer vaccination or treatment of single-gene disorders. In order to facilitate mRNA transfections for future therapeutic applications, there is a need for the delivery system to achieve optimal transfection efficacy, perform with durable stability, and provide drug safety. The objective of our study was to comprehensively analyze the use of 3β-[N-(N',N'-dimethylaminoethane) carbamoyl](DC-Cholesterol)/dioleoylphosphatidylethanolamine (DOPE) liposomes as a potential transfection agent for modified mRNAs...
September 15, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28902680/multicountry-validation-of-samba-a-novel-molecular-point-of-care-test-for-hiv-1-detection-in-resource-limited-setting
#6
Johnson Ondiek, Zikulah Namukaya, Sekesai Mtapuri-Zinyowera, Suna Balkan, Ali Elbireer, Ines Ushiro Lumb, Charles Kiyaga, Neha Goel, Allyson Ritchie, Patience Ncube, Kenneth Omuomu, Kenneth Ndiege, Adeodata Kekitiinwa, Douglas Mangwanya, Mary G Fowler, Lou Nadala, Helen Lee
INTRODUCTION: Early diagnosis of HIV-1 infection and the prompt initiation of antiretroviral therapy are critical to achieving a reduction in the morbidity and mortality of infected infants. The Simple AMplification-Based Assay (SAMBA) HIV-1 Qual Whole Blood Test was developed specifically for early infant diagnosis and prevention of mother-to-child transmission programs implemented at the point-of-care in resource-limited settings. METHODS: We have evaluated the performance of this test run on the SAMBA I semiautomated platform with fresh whole blood specimens collected from 202 adults and 745 infants in Kenya, Uganda, and Zimbabwe...
October 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28901680/evaluation-of-polyacrylonitrile-electrospun-nano-fibrous-mats-as-leukocyte-removal-filter-media
#7
Raha Pourbaghi, Mohammad Zarrebini, Dariush Semnani, Abbasali Pourazar, Nahid Akbari, Reihaneh Shamsfar
Removal of leukocytes from blood products is the most effective means for elimination of undesirable side effects and prevention of possible reactions in recipients. Micro-fibrous mats are currently used for removal of leukocytes from blood. In this study, samples of electrospun nano-fibrous mats were produced. The performance of the produced electrospun nano-fibrous mats as means of leukocytes removal from fresh whole blood was both evaluated and compared with that of commercially available micro-fibrous mats...
September 13, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28892515/strong-interferon-gamma-mediated-cellular-immunity-to-scrub-typhus-demonstrated-using-a-novel-whole-cell-antigen-elispot-assay-in-rhesus-macaques-and-humans
#8
Manutsanun Sumonwiriya, Daniel H Paris, Piyanate Sunyakumthorn, Tippawan Anantatat, Kemajittra Jenjaroen, Suchintana Chumseng, Rawiwan Im-Erbsin, Ampai Tanganuchitcharnchai, Suthatip Jintaworn, Stuart D Blacksell, Fazle R Chowdhury, Barbara Kronsteiner, Prapit Teparrukkul, Robin L Burke, Eric D Lombardini, Allen L Richards, Carl J Mason, James W Jones, Nicholas P J Day, Susanna J Dunachie
Scrub typhus is a febrile infection caused by the obligate intracellular bacterium Orientia tsutsugamushi, which causes significant morbidity and mortality across the Asia-Pacific region. The control of this vector-borne disease is challenging due to humans being dead-end hosts, vertical maintenance of the pathogen in the vector itself, and a potentially large rodent reservoir of unclear significance, coupled with a lack of accurate diagnostic tests. Development of an effective vaccine is highly desirable. This however requires better characterization of the natural immune response of this neglected but important disease...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28883026/group-o-low-titre-only-emergency-donor-panels-for-small-combat-teams
#9
Heidi Doughty, A Maguire, G Fitchett, P Parker
INTRODUCTION: Military elements increasingly operate in small teams in remote areas with no immediate blood product support. Planners and operators may endorse collection of fresh whole blood from pretested donors in emergency situations. The biggest risk of transfusion is the accidental use of ABO incompatible blood which can be fatal. The risk may be mitigated by using only group O LOw (OLO) titre donors with plasma containing low levels of the naturally occurring antibody to group A and B red cells...
September 6, 2017: Journal of the Royal Army Medical Corps
https://www.readbyqxmd.com/read/28875531/pathogen-reduction-of-whole-blood-utility-and-feasibility
#10
REVIEW
J-P Allain, R Goodrich
OBJECTIVES: To collect information on pathogen reduction applied to whole blood. BACKGROUND: Pathogen reduction (PR) of blood components has been developed over the past two decades, and pathogen-reduced fresh-frozen plasma and platelet concentrates are currently in clinical use. High cost and incomplete coverage of components make PR out of reach for low- and middle-income countries (LMIC). However, should PR become applicable to whole blood (WB), the main product transfused in sub-Saharan Africa, and be compatible with the preparation of clinically suitable components, cost would be minimised, and a range of safety measures in place at high cost in developed areas would become redundant...
September 5, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28868514/cd161-expression-on-mucosa-associated-invariant-t-cells-is-reduced-in-hiv-infected-subjects-undergoing-antiretroviral-therapy-who-do-not-recover-cd4-t-cells
#11
Michael L Freeman, Stephen R Morris, Michael M Lederman
BACKGROUND: Mucosa-associated invariant T (MAIT) cells are a recently identified class of innate-like T cells that are involved in the mucosal immune response. MAIT cells are characterized by expression of TCR Vα7.2 and CD161. In HIV infection, there is a profound early loss of MAIT cells from the circulation that never fully recovers, even after prolonged viral control with antiretroviral therapy (ART). METHODS: We analyzed PBMCs from fresh whole blood from HIV-negative or ART-treated HIV-positive donors with full (Immune Success) or impaired (Immune Failure) CD4(+) T- cell recovery by flow cytometry for T-cell markers, TCR Vα7...
2017: Pathogens & Immunity
https://www.readbyqxmd.com/read/28864336/analysis-of-transfusion-related-acute-lung-injury-and-possible-transfusion-related-acute-lung-injury-reported-to-the-french-hemovigilance-network-from-2007-to-2013
#12
REVIEW
Georges Andreu, Karim Boudjedir, Jean-Yves Muller, Elodie Pouchol, Yves Ozier, Guillaume Fevre, Chantal Gautreau, Jean-François Quaranta, Christian Drouet, Claire Rieux, Paul-Michel Mertes, Benoit Clavier, Monique Carlier, Imad Sandid
Using the French Hemovigilance Network database from 2007 to 2013, we provide information on demographics, incidence, and risk factors of reported transfusion-related acute lung injury (TRALI) and possible TRALI, analyze TRALI mitigation efforts for fresh frozen plasma and platelet concentrates, and consider the impact of platelet additive solutions on TRALI incidence. We applied the Toronto consensus conference definitions for TRALI and possible TRALI. Two TRALI subgroups were considered: "antibody positive" when a donor has human leukocyte antigen (class I or II) and/or human neutrophil antigen antibodies and the recipient has cognate antigen, and "antibody negative" when immunological investigation is negative or not done...
July 15, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/28862158/facile-modification-of-electrospun-fibrous-structures-with-antifouling-zwitterionic-hydrogels
#13
Tong Xu, Jing Yang, Jiamin Zhang, Yingnan Zhu, Qingsi Li, Chao Pan, Lei Zhang
Electrospinning technology can easily produce different shaped fibrous structures, making them highly valuable to various biomedical applications. However, surface contamination of biomolecules, cells, or blood has emerged as a significant challenge to the success of electrospun devices, especially artificial blood vessels, catheters and wound dressings etc. Many efforts have been made to resist the surface non-specific biomolecules or cells adsorption, but most of them require complex pre-treatment processes, hard-to-remove metal catalysts or rigorous reaction conditions...
September 1, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28846577/rotational-thromboelastometry-significantly-optimizes-transfusion-practices-for-damage-control-resuscitation-in-combat-casualties
#14
Nicolas J Prat, Andrew D Meyer, Nichole K Ingalls, Julie Trichereau, Joseph J DuBose, Andrew P Cap
BACKGROUND: Up to 40% of combat casualties with a truncal injury die of massive hemorrhage before reaching a surgeon. This hemorrhage can be prevented with damage control resuscitation (DCR) methods, which are focused on replacing shed whole blood by empirically transfusing blood components in a 1:1:1:1 ratio of platelets:fresh frozen plasma:erythrocytes:cryoprecipitate (PLT:FFP:RBC:CRYO). Measurement of hemostatic function with rotational thromboelastometry (ROTEM) may allow optimization of the type and quantity of blood products transfused...
September 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28810961/resuscitation-of-hypotensive-traumatic-brain-injured-animals-with-spray-dried-plasma-does-not-adversely-alter-physiology-and-improves-blood-brain-barrier-function
#15
Steven McDaniel, Stephanie Golla, Anthony N Moore, Joe DaCorta, Arthur Bode, Shibani Pati, Pramod K Dash, Jing Zhao
INTRODUCTION: According to the Defense and Veterans Brain Injury Center and the Armed Forces Health Surveillance Center, the number of soldiers who have sustained a traumatic brain injury (TBI) has risen dramatically over the past decade. Studies have shown that brain damage can be exacerbated if blood loss occurs (often occurring in polytrauma). As blood supply is critical for brain function and survival, TBI patients must be properly resuscitated to maintain blood volume, blood pressure, and cerebral perfusion...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28803752/optimal-dose-timing-and-ratio-of-blood-products-in-massive-transfusion-results-from-a-systematic-review
#16
REVIEW
Zoe K McQuilten, Gemma Crighton, Susan Brunskill, Jessica K Morison, Tania H Richter, Neil Waters, Michael F Murphy, Erica M Wood
Optimal dose, timing and ratio to red blood cells (RBC) of blood component therapy (fresh frozen plasma [FFP], platelets, cryoprecipitate or fibrinogen concentrate) to reduce morbidity and mortality in critically bleeding patients requiring massive transfusion is unknown. We performed a systematic review for randomized controlled trials (RCT) in MEDLINE, The Cochrane Library, Embase, CINAHL, PubMed the Transfusion Evidence Library and using multiple clinical trials registries to 21 February 2017. Sixteen RCTs were identified: six completed (five in adult trauma patients, one pediatric burn patients) and ten ongoing trials...
July 6, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/28792466/distinctive-responses-in-an-in-vitro-human-dendritic-cell-based-system-upon-stimulation-with-different-influenza-vaccine-formulations
#17
Gabriela Tapia-Calle, Maaike Stoel, Jacqueline de Vries-Idema, Anke Huckriede
Vaccine development relies on testing vaccine candidates in animal models. However, results from animals cannot always be translated to humans. Alternative ways to screen vaccine candidates before clinical trials are therefore desirable. Dendritic cells (DCs) are the main orchestrators of the immune system and the link between innate and adaptive responses. Their activation by vaccines is an essential step in vaccine-induced immune responses. We have systematically evaluated the suitability of two different human DC-based systems, namely the DC-cell line MUTZ-3 and primary monocyte-derived DCs (Mo-DCs) to screen immunopotentiating properties of vaccine candidates...
August 9, 2017: Vaccines
https://www.readbyqxmd.com/read/28777444/intracellular-cytokine-detection-by-flow-cytometry-in-surface-marker-defined-human-peripheral-blood-mononuclear-t-cells
#18
Fredine T Lauer, Jesse L Denson, Ellen Beswick, Scott W Burchiel
In a recent unit in this series, protocols for the isolation, cryopreservation, thawing, and immunophenotyping of HPBMC isolated from peripheral whole blood using cell surface marker (CSM) staining and multi-color flow cytometry analysis were presented. The current procedure describes the detection and quantification of CSM and intracellular markers (ICM), including transcription factors and cytokines, following activation and differentiation of CD4+ T-cells using multi-color flow cytometry. Results indicated that repeatable and robust detection of ICM could be obtained in surface marker-defined T cells that identify functional subsets of cells...
August 4, 2017: Current Protocols in Toxicology
https://www.readbyqxmd.com/read/28771656/transfusion-practice-in-trauma-resuscitation
#19
REVIEW
Ashley M Eckel, John R Hess
Recognition of the acute coagulopathy of trauma and the limits of reconstituting whole blood with conventional blood components has led to a radical change in the way trauma patients with severe injuries are resuscitated. Massive transfusion protocols (MTP) have evolved toward the administration of conventional blood components in fixed ratios. Administration of a 1:1:1 unit ratio of fresh frozen plasma to whole-blood-derived platelets to packed red blood cells is now the most common strategy and the stated goal of directors of >80% of the level I trauma centers in the United States...
August 2017: Southern Medical Journal
https://www.readbyqxmd.com/read/28754852/molecular-characterization-of-circulating-colorectal-tumor-cells-defines-genetic-signatures-for-individualized-cancer-care
#20
Say Li Kong, Xingliang Liu, Nur-Afidah Mohamed Suhaimi, Kenneth Jia Hao Koh, Min Hu, Daniel Yoke San Lee, Igor Cima, Wai Min Phyo, Esther Xing Wei Lee, Joyce A Tai, Yu Miin Foong, Jess Honganh Vo, Poh Koon Koh, Tong Zhang, Jackie Y Ying, Bing Lim, Min-Han Tan, Axel M Hillmer
Studies on circulating tumor cells (CTCs) have largely focused on platform development and CTC enumeration rather than on the genomic characterization of CTCs. To address this, we performed targeted sequencing of CTCs of colorectal cancer patients and compared the mutations with the matched primary tumors. We collected preoperative blood and matched primary tumor samples from 48 colorectal cancer patients. CTCs were isolated using a label-free microfiltration device on a silicon microsieve. Upon whole genome amplification, we performed amplicon-based targeted sequencing on a panel of 39 druggable and frequently mutated genes on both CTCs and fresh-frozen tumor samples...
July 10, 2017: Oncotarget
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