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https://www.readbyqxmd.com/read/29783009/antiplatelet-medication-reversal-strategies-in-operative-intracranial-hemorrhage-a-survey-of-practicing-neurosurgeons
#1
Paul M Foreman, Adeel Ilyas, James Mooney, Philip G R Schmalz, Beverly C Walters, Christoph J Griessenauer
OBJECTIVE: Antiplatelet therapy is common and complicates the operative management of acute intracranial hemorrhage. Little data exist to guide antiplatelet reversal strategies. METHODS: An online survey detailing antiplatelet reversal strategies in patients presenting with acute operative intracranial hemorrhage (subdural hematoma (SDH), epidural hematoma (EDH), and intracerebral hemorrhage (ICH) was distributed to board certified neurosurgeons in the North America...
May 18, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29782929/coated-platelets-introduce-significant-delay-in-onset-of-peak-thrombin-production-theoretical-predictions
#2
M Susree, Mikhail A Panteleev, M Anand
Platelets play a crucial role in the initiation, progress, termination as well as regulation of blood coagulation. Recent studies have confirmed that not all but only a small percentage of thrombin-activated platelets ("coated" platelets) exhibit procoagulant properties (namely the expression of phosphatidylserine binding sites) required for the acceleration and progress of coagulation. A mechanistic model is developed for in vitro coagulation whose key features are distinct equations for coated platelets, thrombin dose-dependence for coated platelets, and competitive binding of coagulation factors to platelet membrane...
May 18, 2018: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29782513/high-red-blood-cell-composition-in-clots-is-associated-with-successful-recanalization-during-intra-arterial-thrombectomy
#3
Jong Wook Shin, Hye Seon Jeong, Hyon-Jo Kwon, Kyu Sang Song, Jei Kim
We evaluated the composition of individual clots retrieved during intra-arterial thrombectomy in relation to recanalization success, stroke subtype, and the presence of clot signs on initial brain images. We analyzed clot and interventional data from 145 retrieval trials performed for 37 patients (69.5±14.0 years, 20 men, large artery atherosclerosis, n = 7; cardioembolism, n = 22; undetermined etiology, n = 8) who had undergone intra-arterial thrombectomy. Rates of clot retrieval and successful recanalization (Arterial Occlusive Lesion score of 2-3) for separate retrieval trials were evaluated...
2018: PloS One
https://www.readbyqxmd.com/read/29782272/-duration-and-timing-of-initiation-of-therapy-with-platelet-p2y12-inhibitors-in-the-treatment-of-patients-with-acute-coronary-syndrome
#4
S V SHalaev, Z M Safiullina
In recent years, the issues of choice of an agent for dual antiplatelet therapy (DAPT) as well as timing of initiation and duration of DAPT in patients with acute coronary syndrome (ACS) have been actively discussed. In this article we present data of major randomized trials of clopidogrel and novel P2Y12 inhibitors - prasugrel, ticagrelor, cangrelor - assessing strategy of administration of antiaggregants in patients with ACS before coronary angiography / percutaneous coronary intervention. The article also contains analysis of differences between recommendations of the European Society of Cardiology and American College of Cardiology/American Heart Association on therapy with oral P2Y12 inhibitors in the management of patients with ACS...
March 2018: Kardiologiia
https://www.readbyqxmd.com/read/29782255/-high-on-treatment-platelet-reactivity-determinants-on-dual-antiplatelet-therapy-in-patients-with-ischemic-heart-disease-before-elective-percutaneous-coronary-intervention
#5
E Z Golukhova, M V Grigoryan, M N Ryabinina, N I Bulaeva
OBJECTIVE: to determine impact of different laboratory and genetic factors on high on-treatment platelet reactivity (HOPR) during dual antiplatelet therapy (DAPT). METHODS: We included in this study 94 patients with stable ischemic heart disease (mean age 59±9.67 years). All patients underwent elective PCI with implantation of drug eluting stents at the background of dual antiplatelet therapy (DAPT) with aspirin and clopidogrel. Platelet reactivity was assessed using light transmission aggregometry with 5 μmol/L ADP (LTA 5ADP) and VerifyNow assay before PCI...
April 2018: Kardiologiia
https://www.readbyqxmd.com/read/29782179/early-intravascular-events-are-associated-with-development-of-ards
#6
Raja-Elie E Abdulnour, Tina Gunderson, Ioanna Barkas, Jack Y Timmons, Cindy Barnig, Michelle Gong, Daryl J Kor, Ognjen Gajic, Daniel Talmor, Rickey E Carter, Bruce D Levy
RATIONALE: The acute respiratory distress syndrome (ARDS) is a devastating illness with limited therapeutic options. A better understanding of early biochemical and immunological events in ARDS could inform the development of new preventive and treatment strategies. OBJECTIVE: To determine select peripheral blood lipid mediator and leukocyte responses in patients at-risk for ARDS. METHODS: Patients at risk for ARDS were randomized as part of a multicenter, double-blind clinical trial of aspirin versus placebo (LIPS-A; NCT01504867)...
May 21, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29781765/individualized-titanium-mesh-combined-with-platelet-rich-fibrin-and-deproteinized-bovine-bone-a-new-approach-for-challenging-augmentation
#7
Jonas Lorenz, Sarah Al-Maawi, Robert Sader, Shahram Ghanaati
Autologous bone transfer is regarded as the gold standard for ridge augmentation before dental implantation, especially in severe bony defects caused by tumor resection or atrophy. In addition to the advantages of autologous bone, transplantation has several disadvantages, such as secondary operation, increased morbidity and pain. The present study reports, for the first time, a combination of a xenogeneic bone substitute (BO) with platelet-rich fibrin (PRF), which is a fully autologous blood concentrate derived from the patient's own peripheral blood by centrifugation...
May 21, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29781549/administration-of-platelets-to-ruptured-abdominal-aortic-aneurysm-patients-before-open-surgery-a-prospective-single-blinded-randomised-study
#8
T B Lunen, P I Johansson, L P Jensen, K M Homburg, O C Roeder, L Lonn, N H Secher, U Helgstrand, M Carstensen, K B Jensen, T Lange, H Sillesen, F Swiatek, H B Nielsen
BACKGROUND: In patients undergoing open surgery for a ruptured abdominal aortic aneurysm (rAAA), survivors demonstrate a high platelet count, and proactive administration of platelets (and fresh frozen plasma) appears to influence mortality. OBJECTIVES: This trial investigated the effect of platelets administered before transport to surgery. METHODS: In a prospective study design, patients were randomised to receive platelets (intervention; n = 61) or no platelets (control; n = 61) before transport to vascular surgery from 11 local hospitals...
May 21, 2018: Transfusion Medicine
https://www.readbyqxmd.com/read/29781540/clinical-significance-of-platelet-to-lymphocyte-ratio-in-women-with-preeclampsia
#9
Min-A Kim, Gwan Hee Han, Ja-Young Kwon, Young-Han Kim
PROBLEM: Preeclampsia (PE) is a serious pregnancy complication leading to high maternal, perinatal morbidity, and mortality. We aimed to investigate the clinical effectiveness of the platelet-to-lymphocyte ratio (PLR) in women with PE and compare this measurement to platelet indices as a diagnostic and prognostic marker of PE. METHOD OF STUDY: A total of 471 healthy pregnant women, 126 women diagnosed with mild PE, and 227 with severe PE were included in this retrospective study...
May 21, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29781346/distribution-characteristics-of-cells-in-splenomegaly-due-to-hepatitis-b-related-cirrhotic-portal-hypertension-and-their-clinical-importance
#10
Xiaoyu Han, Yunfu Lv, Yejuan Li, Jie Deng, Qingan Qiu, Ning Liu, Shuya Zhao, Caixian Liao
Objectives To investigate peripheral cytopenia in patients with splenomegaly due to hepatitis B-related cirrhotic portal hypertension (HBRCPH) by comparing blood cell counts from enlarged spleens with peripheral blood. Methods This prospective study involved patients undergoing splenectomy at the Nangfang Hospital from June 2013 to December 2015. Blood cell counts from peripheral blood were compared with those from splenic blood taken during splenectomies. Results Clinical data were available from 30 patients...
January 1, 2018: Journal of International Medical Research
https://www.readbyqxmd.com/read/29781178/the-effects-of-platelet-rich-plasma-on-hypertrophic-scars-fibroblasts
#11
Seung Min Nam, Yong Bae Kim
We hypothesised that a feedback mechanism of the transforming growth factor (TGF)-β1 signalling pathway, triggered by high-level TGF-β1, activates platelet-rich plasma (PRP) release to reduce connective tissue growth factor (CTGF) production and expression of CTGF mRNA in hypertrophic scar dermal fibroblasts. Primary dermal fibroblasts were isolated from cultures of hypertrophic scars. Cells were cultured after addition of serum-free Dulbecco's modified Eagle's medium supplemented with 5% (wt/vol) PRP or platelet-poor plasma (PPP)...
May 21, 2018: International Wound Journal
https://www.readbyqxmd.com/read/29781019/complex-strain-induced-structural-changes-observed-in-fibrin-assembled-in-human-plasma
#12
G Portale, J Torbet
The structure of the core scaffold of blood clots, the interlinked 3-dimensional network of fibrin fibers, is modified by mechanical forces generated by platelet driven clot retraction, wound repair and shear stress through blood flow. Here X-ray diffraction is used to investigate how uniaxial strain, ε (ε = extension/original length), alters fiber structure in highly aligned human plasma clots covalently cross-linked by Factor XIIIa. Three stretch sensitive axially repeating structures are identified. Firstly, the foundation structure with an initial ≈22 nm axial repeat stretches, fades then disappears at ε ≈ 0...
May 21, 2018: Nanoscale
https://www.readbyqxmd.com/read/29780836/defining-platelet-rich-plasma-usage-by-team-physicians-in-elite-athletes
#13
David E Kantrowitz, Ajay S Padaki, Christopher S Ahmad, T Sean Lynch
Background: The indications for the use of platelet-rich plasma (PRP) are vaguely defined despite the frequency of its use as a treatment for athletes. While select studies have advocated for its efficacy, the majority of orthopaedic research conducted on the topic has been equivocal. Purpose: To define the use of PRP in elite athletes by team physicians from professional sports leagues. Study Design: Cross-sectional study. Methods: A survey assessing treatment timing, usage patterns, indications, and complications was generated by fellowship-trained sports medicine orthopaedic surgeons...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29780806/myeloperoxidase-negatively-regulates-neutrophil-endothelial-cell-interactions-by-impairing-%C3%AE-m%C3%AE-2-integrin-function-in-sterile-inflammation
#14
Alan Tseng, Kyungho Kim, Jing Li, Jaehyung Cho
Interactions of neutrophils with endothelial cells (ECs) and platelets contribute to tissue damage and vascular occlusion under sterile inflammatory conditions. However, the molecular mechanisms regulating the cell-cell interactions remain poorly understood. Previous studies suggest that reactive oxygen species, such as hydrogen peroxide (H2 O2 ), produced from NADPH oxidase 2 play a critical role in platelet-neutrophil interactions by regulating the function of neutrophil αMβ2 integrin during sterile inflammation...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29780635/liquid-biopsy-for-lung-cancer-early-detection
#15
REVIEW
Mariacarmela Santarpia, Alessia Liguori, Alessandro D'Aveni, Niki Karachaliou, Maria Gonzalez-Cao, Maria Grazia Daffinà, Chiara Lazzari, Giuseppe Altavilla, Rafael Rosell
Molecularly targeted therapies and immune checkpoint inhibitors have markedly improved the therapeutic management of advanced lung cancer. However, it still remains the leading cause of cancer-related mortality worldwide, with disease stage at diagnosis representing the main prognostic factor. Detection of lung cancer at an earlier stage of disease, potentially susceptible of curative resection, can be critical to improve patients survival. Low-dose computed tomography (LDCT) screening of high-risk patients has been demonstrated to reduce mortality from lung cancer, but can be also associated with high false-positive rate, thus often resulting in unnecessary interventions for patients...
April 2018: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/29780592/preleukemic-and-second-hit-mutational-events-in-an-acute-myeloid-leukemia-patient-with-a-novel-germline-runx1-mutation
#16
Isaac Ks Ng, Joanne Lee, Christopher Ng, Bustamin Kosmo, Lily Chiu, Elaine Seah, Michelle Meng Huang Mok, Karen Tan, Motomi Osato, Wee-Joo Chng, Benedict Yan, Lip Kun Tan
Background: Germline mutations in the RUNX1 transcription factor give rise to a rare autosomal dominant genetic condition classified under the entity: Familial Platelet Disorders with predisposition to Acute Myeloid Leukaemia (FPD/AML). While several studies have identified a myriad of germline RUNX1 mutations implicated in this disorder, second-hit mutational events are necessary for patients with hereditary thrombocytopenia to develop full-blown AML. The molecular picture behind this process remains unclear...
2018: Biomarker Research
https://www.readbyqxmd.com/read/29780424/reduced-haematopoietic-output-in-automobile-mechanics-and-sprayers-with-chronic-exposure-to-petrochemicals-a-case-control-study-in-cape-coast-ghana
#17
Patrick Adu, Richard Pobee, Aaron Awuah, Paul B Asiamah, Festus Amoani, Sampson Gyabaa
Background: Automobile mechanics and sprayers are at a higher risk of exposure to hazardous chemicals such as polycyclic aromatic hydrocarbons and heavy metals which may cause adverse health outcomes. This study aimed to use reticulocyte count as an indirect measure of the haematological output in automobile mechanics and sprayers in the Cape Coast Metropolis, Ghana. Method: This cross-sectional study recruited 130 participants: 90 cases (57 automobile mechanics and 33 automobile sprayers) and 40 controls (nonautomobile workers)...
2018: Journal of Environmental and Public Health
https://www.readbyqxmd.com/read/29780330/application-of-feedback-system-control-optimization-technique-in-combined-use-of-dual-antiplatelet-therapy-and-herbal-medicines
#18
Wang Liu, Yu-Long Li, Mu-Ting Feng, Yu-Wei Zhao, Xianting Ding, Ben He, Xuan Liu
Aim: Combined use of herbal medicines in patients underwent dual antiplatelet therapy (DAPT) might cause bleeding or thrombosis because herbal medicines with anti-platelet activities may exhibit interactions with DAPT. In this study, we tried to use a feedback system control (FSC) optimization technique to optimize dose strategy and clarify possible interactions in combined use of DAPT and herbal medicines. Methods: Herbal medicines with reported anti-platelet activities were selected by searching related references in Pubmed...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29780258/influence-of-different-ex-vivo-cell-culture-methods-on-the-proliferation-and-anti-tumor-activity-of-cytokine-induced-killer-cells-from-gastric-cancer-patients
#19
Bin Shi, Aixia Sun, Xiaorui Zhang
Purpose: In cytokine-induced killer (CIK) cell therapy, the phenotypes and the numbers of CIK cells have a great influence on the therapeutic effects. This study aimed to investigate the effects of different ex vivo cell culture methods on the proliferation and cytotoxicity of CIK cells that were obtained from gastric cancer patients. Patients and methods: CIK precursor (Pre-CIK) cells were collected by either hydroxyethyl starch (HES) sedimentation (HES method, unpurified group) or Ficoll-Hypaque density gradient centrifugation (Ficoll method, purified group)...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29780001/automated-typing-of-red-blood-cell-and-platelet-antigens-a-whole-genome-sequencing-study
#20
William J Lane, Connie M Westhoff, Nicholas S Gleadall, Maria Aguad, Robin Smeland-Wagman, Sunitha Vege, Daimon P Simmons, Helen H Mah, Matthew S Lebo, Klaudia Walter, Nicole Soranzo, Emanuele Di Angelantonio, John Danesh, David J Roberts, Nick A Watkins, Willem H Ouwehand, Adam S Butterworth, Richard M Kaufman, Heidi L Rehm, Leslie E Silberstein, Robert C Green
BACKGROUND: There are more than 300 known red blood cell (RBC) antigens and 33 platelet antigens that differ between individuals. Sensitisation to antigens is a serious complication that can occur in prenatal medicine and after blood transfusion, particularly for patients who require multiple transfusions. Although pre-transfusion compatibility testing largely relies on serological methods, reagents are not available for many antigens. Methods based on single-nucleotide polymorphism (SNP) arrays have been used, but typing for ABO and Rh-the most important blood groups-cannot be done with SNP typing alone...
May 17, 2018: Lancet Haematology
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