keyword
MENU ▼
Read by QxMD icon Read
search

platelet clump

keyword
https://www.readbyqxmd.com/read/29858439/lesson-of-the-month-1-to-stop-a-fit-but-swinging-low
#1
Osakpolor Ogbebor, Ankit Agrawal, Balaji Yegneswaran
This is a case of an elderly woman who presented to our emergency room with an episode of a witnessed fall. The past medical history of the patient was significant for post-stroke epilepsy for which she was on oxcarbazepine. Initial blood work showed a white cell count of 4.5, haemoglobin of 12.4, and platelet count of 15,000. Peripheral blood smear showed normal platelet and red cell morphology without clumping. The patient's history suggested that she was recently started on oxcarbazepine prompting discontinuing of the drug...
June 2018: Clinical Medicine: Journal of the Royal College of Physicians of London
https://www.readbyqxmd.com/read/29801512/rare-presentation-of-rickettsial-infection-as-purpura-fulminans-a-case-report
#2
Chamara Dalugama, Indika Bandara Gawarammana
BACKGROUND: Purpura fulminans is an acute life-threatening disorder characterized by intravascular thrombosis and hemorrhagic infarction of the skin complicated with disseminated intravascular coagulation. It is commonly seen in acute infections following meningococcal and streptococcal infections. Few cases of purpura fulminans following rickettsial infections have been described in the literature. CASE PRESENTATION: We report a case of a 55-year-old Sri Lankan woman who presented to Teaching Hospital Peradeniya with a febrile illness, headache, and myalgia that progressed to an erythematous rash starting over the bilateral lover limbs and hands and that became black and necrotic with a few hemorrhagic blebs...
May 26, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29669404/patients-with-platelet-aggregation-inhibitors-in-the-dental-office
#3
Ayhan Yildirim, Heinz-Theo Lübbers, Ali Yildirim
Antiplatelet agents with the active ingredients acetylsalicylic acid (Aspirin® protect 100), clopidogrel (Iscover®, Plavix®), prasugrel (Efient®) or ticagrelor (Brilique™) prevent the clumping of platelets and thus the formation of small clots at constrictions of the coronary arteries or on the metal struts of stents in the coronary artery or in bypass grafts. Large-scale studies have shown that taken regularly, these drugs can extend life and help prevent heart attacks. Especially in patients with newly implanted stents, the combination of the above-mentioned agents prevents sudden complete occlusion of the vessel concerned...
April 15, 2018: Swiss Dental Journal
https://www.readbyqxmd.com/read/29619757/platelet-membrane-based-and-tumor-associated-platelet-targeted-drug-delivery-systems-for-cancer-therapy
#4
REVIEW
Yinlong Zhang, Guangna Liu, Jingyan Wei, Guangjun Nie
Platelets have long been known to play critical roles in hemostasis by clumping and clotting blood vessel injuries. Recent experimental evidence strongly indicates that platelets can also interact with tumor cells by direct binding or secreting cytokines. For example, platelets have been shown to protect circulating cancer cells in blood circulation and to promote tumor metastasis. In-depth understanding of the role of platelets in cancer progression and metastasis provides promising approaches for platelet biomimetic drug delivery systems and functional platelet-targeting strategies for effective cancer treatment...
April 4, 2018: Frontiers of Medicine
https://www.readbyqxmd.com/read/29562808/prospective-analysis-of-bleeding-events-in-left-ventricular-assist-device-patients
#5
Saadia Sherazi, Peter Kouides, Charles Francis, Charles Julian Lowenstein, Majed Refaai, Grace Conley, Brent Alan Johnson, Eugene Muchnik, Susan Lien, Howard Todd Massey, Jeffrey Dean Alexis
BACKGROUND: Bleeding is a major cause of morbidity in patients with continuous flow left ventricular assist devices (LVADs). We sought to identify clinical predictors of bleeding within the first year of LVAD implantation. METHODS: A prospective study was performed on 30 patients with HeartMate II implantation at the University of Rochester Medical Center, Rochester, New York, United States. Blood was collected within 1 week before implantation, and at 1, 3, and 30 ± 10 days after implantation...
May 2018: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/29379088/the-inflammatory-effects-of-tnf-%C3%AE-and-complement-component-3-on-coagulation
#6
Martin J Page, Janette Bester, Etheresia Pretorius
Tissue necrosis factor-α (TNF-α) and complement component 3 (C3) are two well-known pro-inflammatory molecules. When TNF-α is upregulated, it contributes to changes in coagulation and causes C3 induction. They both interact with receptors on platelets and erythrocytes (RBCs). Here, we look at the individual effects of C3 and TNF-α, by adding low levels of the molecules to whole blood and platelet poor plasma. We used thromboelastography, wide-field microscopy and scanning electron microscopy to study blood clot formation, as well as structural changes to RBCs and platelets...
January 29, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29341241/pan-pseudothrombocytopenia-an-unusual-case-of-platelet-clumping
#7
Hany Elmariah, Satish Shanbhag
No abstract text is available yet for this article.
January 17, 2018: American Journal of Hematology
https://www.readbyqxmd.com/read/29194000/time-dependent-reduction-in-platelet-aggregation-using-the-multiplate-analyser-and-hirudin-blood-due-to-platelet-clumping
#8
Kent Chapman, Emmanuel J Favaloro
The Multiplate is a popular instrument that measures platelet function using whole blood. Potentially considered a point of care instrument, it is also used by hemostasis laboratories. The instrument is usually utilized to assess antiplatelet medication or as a screen of platelet function. According to the manufacturer, testing should be performed within 0.5-3 hours of blood collection, and preferably using manufacturer provided hirudin tubes. We report time-associated reduction in platelet aggregation using the Multiplate and hirudin blood collection tubes, for all the major employed agonists...
May 2018: Platelets
https://www.readbyqxmd.com/read/28975036/marked-paraneoplastic-basophilia-accompanying-eosinophilia-in-a-cat-with-alimentary-t-cell-lymphoma
#9
Maria Balan, Aimee Hope, Joseph Cassidy, Maureen McCullough, Peter J O'Brien
CASE SUMMARY: A 5-year-old male neutered domestic shorthair cat was referred with a history of persistent pyrexia, pica, soft faeces, inappetence, intermittent vomiting, mild-to-moderate granulocytosis and mild hypercalcaemia. No significant improvement was noted after antibiotic and corticosteroid treatment, except that the hypercalcaemia resolved. Physical examination, including thoracic auscultation, and abdominal and peripheral lymph node palpation, were unremarkable. On admission, haematology revealed moderate leukocytosis (36...
July 2017: JFMS open reports
https://www.readbyqxmd.com/read/28843244/in-vitro-leukoagglutination-a-rare-hematological-cause-of-spurious-leukopenia
#10
Sadia Sultan, Syed Muhammad Irfan
Leukopenia secondary to leukocytic agglutination is caused by an ethylene diamine tetra acetic acid (EDTA) which may appear in both benign and malignant states. Ethylene diamine tetra acetic acid induced platelets clumping in peripheral blood has been well established, but invitro leukocytic aggregation is very rarest hematological finding. Pseudo-leukopenia resulting from leukoagglutinins has been reported in the cirrhotic state, infections, autoimmune disorders, uremia, in immunosuppressed state or in various malignancies...
June 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28781833/edta-induced-pseudothrombocytosis-and-citrate-induced-platelet-agglutination-in-a-patient-with-waldenstrom-macroglobulinemia
#11
Pia Bükmann Larsen, Jonas Vikeså, Lennart Friis-Hansen
Hematology analyzers sometimes generate spurious results. A patient had EDTA-induced pseudothrombocytosis and platelet agglutination in citrate blood samples. This case verifies that addition of 1% paraformaldehyde to the citrate tubes can prevent platelet clumping. Further, it illustrates the advantages of having access to more than one platelet count method.
August 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/28582600/effect-of-time-and-temperature-on-anticoagulant-dependent-pseudothrombocytopenia-in-g%C3%A3-ttingen-minipigs
#12
Tim Erkens, Liesbeth Van den Sande, Jill Witters, Filip Verbraeken, Adriana Looszova, Bianca Feyen
BACKGROUND: A marked decrease in thrombocyte count was observed between subsequent measurements of the same EDTA blood sample in several minipigs, but little information was available explaining this finding. OBJECTIVES: The objective was to evaluate the impact of several preanalytic variables on thrombocyte counts in minipigs, in order to improve understanding of the in vitro thrombocyte decrease observed. MATERIALS AND METHODS: Hematology blood samples from male and female Göttingen minipigs were collected using EDTA or citrate as an anticoagulant...
September 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28533135/enhanced-local-disorder-in-a-clinically-elusive-von-willebrand-factor-provokes-high-affinity-platelet-clumping
#13
Alexander Tischer, Venkata R Machha, Juan P Frontroth, Maria A Brehm, Tobias Obser, Reinhard Schneppenheim, Leland Mayne, S Walter Englander, Matthew Auton
Mutation of the cysteines forming the disulfide loop of the platelet GPIbα adhesive A1 domain of von Willebrand factor (VWF) causes quantitative VWF deficiencies in the blood and von Willebrand disease. We report two cases of transient severe thrombocytopenia induced by DDAVP treatment. Cys1272Trp and Cys1458Tyr mutations identified by genetic sequencing implicate an abnormal gain-of-function phenotype, evidenced by thrombocytopenia, which quickly relapses back to normal platelet counts and deficient plasma VWF...
July 7, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/28436749/differential-diagnosis-of-neonatal-alloimmune-thrombocytopenia-type-2b-von-willebrand-disease
#14
Mathilde Penel-Page, Sandrine Meunier, Mathilde Fretigny, Sandra Le Quellec, Pierre Boisseau, Christine Vinciguerra, Catherine Ternisien, Lucia Rugeri
At birth, severe thrombocytopenia without context of infection should mainly suggest neonatal alloimmune thrombocytopenia (NAIT), especially in case of a platelet count below 20 GL(-1). We report two cases of severe neonatal thrombocytopenia, first suspected as being NAIT. Both had a platelet count below 20 GL(-1) with platelet clumps. The absence of alloantibodies and failure of platelet transfusion and intravenous immunoglobulins to improve the platelet count led to question the diagnosis and to evoke inherited bleeding disorders...
December 2017: Platelets
https://www.readbyqxmd.com/read/28337761/depression-and-cognitive-deficits-as-long-term-consequences-of-thrombotic-thrombocytopenic-purpura
#15
Tanja Falter, Veronique Schmitt, Stephanie Herold, Veronika Weyer, Charis von Auer, Stefanie Wagner, Gudrun Hefner, Manfred Beutel, Karl Lackner, Bernhard Lämmle, Inge Scharrer
BACKGROUND: Thrombotic thrombocytopenic purpura (TTP) is an acute life-threatening microangiopathy with a tendency of relapse characterized by consumptive thrombocytopenia, microangiopathic hemolytic anemia, and spontaneous von Willebrand factor-induced platelet clumping leading to microthrombi. The brain is frequently affected by microthrombi leading to neurologic abnormalities of varying severity. STUDY DESIGN AND METHODS: The aim of this observational cohort study was to investigate the prevalence of depression and cognitive deficits in 104 patients having survived acute TTP...
May 2017: Transfusion
https://www.readbyqxmd.com/read/28319015/collection-storage-inspection-and-quality-control-of-platelet-concentrates-obtained-by-apheresis-the-situation-in-spain
#16
Azucena Castrillo, Teresa Jimenez-Marco, José L Arroyo, María L Jurado, Luis Larrea, Rosa M Maymo, Jorge Monge, Carmen Muñoz, Ángel Pajares, Marta Yáñez
BACKGROUND: Diverse variables are involved in apheresis platelet collection, processing and storage. This survey shows how these are realized in Spain. METHOD: An analysis of collected data was performed in a questionnaire completed by ten Transfusion Centers (TC) which perform between 50 and 520 apheresis procedures per month. This information comprises the procedures used to collect, inspect and store apheresis platelet concentrates (PC), and quality control data...
June 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28150319/factors-influencing-platelet-clumping-during-peripheral-blood-hematopoietic-stem-cell-collection
#17
Gagan Mathur, Sarah L Mott, Laura Collins, Gail A Nelson, C Michael Knudson, Annette J Schlueter
BACKGROUND: Platelet clumping is a common occurrence during peripheral blood hematopoietic stem cell (HSC) collection using the Spectra Optia mononuclear cell (MNC) protocol. If clumping persists, it may prevent continuation of the collection and interfere with proper MNC separation. This study is the first to report the incidence of clumping, identify precollection factors associated with platelet clumping, and describe the degree to which platelet clumping interferes with HSC product yield...
May 2017: Transfusion
https://www.readbyqxmd.com/read/28060120/type-2b-von-willebrand-disease-an-unusual-cause-of-severe-neonatal-thrombocytopenia
#18
Seth J Rotz, Joseph S Palumbo, Russell E Ware
An infant with presumed maternal immune thrombocytopenic purpura had persistent thrombocytopenia with platelet clumping. The patient had no significant bleeding symptoms in the first year of life and von Willebrand antigen and ristocetin cofactor activity were normal. Absent high molecular weight multimers ultimately led to a genetically proven diagnosis of type 2B von Willebrand disease (3964G>A VWF exon 28), highlighting the challenges of establishing this diagnosis in infants.
August 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28034522/comparison-of-two-methodologies-for-the-enrichment-of-mononuclear-cells-from-thawed-cord-blood-products-the-automated-sepax-system-versus-the-manual-ficoll-method
#19
COMPARATIVE STUDY
Indreshpal Kaur, Jane M Zulovich, Marissa Gonzalez, Kara M McGee, Nirmali Ponweera, Daljit Thandi, Enrique F Alvarez, Kathy Annandale, Frank Flagge, Katayoun Rezvani, Elizabeth Shpall
BACKGROUND AIMS: Umbilical cord blood (CB) is being used as a source of hematopoietic stem cells (HSCs) and immune cells to treat many disorders. Because these cells are present in low numbers in CB, investigators have developed strategies to expand HSCs and other immune cells such as natural killer (NK) cells. The initial step in this process is to enrich mononuclear cells (MNCs) while depleting unwanted cells. The manual method of MNC enrichment is routinely used by many centers; however, it is an open system, time-consuming and operator dependent...
March 2017: Cytotherapy
https://www.readbyqxmd.com/read/27830476/production-of-heterozygous-alpha-1-3-galactosyltransferase-ggta1-knock-out-transgenic-miniature-pigs-expressing-human-cd39
#20
Kimyung Choi, Joohyun Shim, Nayoung Ko, Heejong Eom, Jiho Kim, Jeong-Woong Lee, Dong-Il Jin, Hyunil Kim
Production of transgenic pigs for use as xenotransplant donors is a solution to the severe shortage of human organs for transplantation. The first barrier to successful xenotransplantation is hyperacute rejection, a rapid, massive humoral immune response directed against the pig carbohydrate GGTA1 epitope. Platelet activation, adherence, and clumping, all major features of thrombotic microangiopathy, are inevitable results of immune-mediated transplant rejection. Human CD39 rapidly hydrolyzes ATP and ADP to AMP; AMP is hydrolyzed by ecto-5'-nucleotidase (CD73) to adenosine, an anti-thrombotic and cardiovascular protective mediator...
April 2017: Transgenic Research
keyword
keyword
102237
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"